It seems my statement generated some controversy and mockery due to poor punctuation and lack of deeper explanation (my bad but I guess I deserved it). Even though, it's good when discussion actually happens in the thread.
So here goes something more elaborate:
Making a game involves a lot of planning and a lot of thought beforehand just like any project. The bigger and more ambitious is the game or project the less certainties you have as with new challenges you get new problems.
That's why delays happen, that's why whole game mechanics / features get tossed constantly and delays happen. That's part of the process, there is no ambitious game that innovated and tried to do "new" things that hasn't had it's fare share of hurdles during development. As much thought you put into planning and try to make sure you cover all the possible fallouts there will allways be something that you miss. That you can not control.
No company, even the most experienced ones is immune to this situation. Making new games that push things forward ir a very very risky decision. Game Developers that try that are actually heroes in my book, they crave to new and better game experiences, they are not afraid to risk their reputation and company to try and do groundbreaking games. But sh*t happens and things go bad, sometimes so bad that there is no other way than canceling the show. Sure, mistakes were made , unexpected hurdles can suddenly apear from the most unexpected places. Management, Publishers, New Tech etc.
Some examples:
DOOM 4 - Start of development: 2008 » Release date: 2016
http://kotaku.com/five-years-and-nothing-to-show-how-doom-4-got-off-trac-468097062
Several identity crises made DOOM development go on and on, change of game design, refactoring, change of dev's, etc
Prop's to them for sticking with it and making it happen, released with good claim.
The Witcher 3 - Culmination of a 10 year work by Project Red
http://www.develop-online.net/interview/the-wild-road-to-the-witcher-3/0207553
“We spent almost two years learning how to organise production and how to effectively run a studio,” explains Iwinski. “It was a much slower start than it should have been and that’s why The Witcher took us a long five years to finish.”
"It was a really tough decision to push back The Witcher 3: Wild Hunt, but gamers don’t care about buggy games shipped on time."Marcin Iwinski, CD Projekt
"Iwinski recognises that, due to the scale and complexity of games these days, exact planning of game development time, including QA, is still “mission impossible”, but there are ways to alleviate potential issues, such as it has enacted with The Witcher 3.
“Looking at our own experience, I would say: set hard deadlines, push for making it happen like there’s no tomorrow, but do not ship until you are convinced the game is ready,” he states."
The Last Guardian: 9 Years in Development
http://kotaku.com/the-last-guardians-designer-explains-how-he-stayed-moti-1782448187
Blizzard MMO Titan Canceled after 10 years of development, then refactored to Overwatch:
http://www.gamespot.com/articles/blizzard-on-cancelled-titan-mmo-we-failed-horrific/1100-6439068/
"Development costs for Titan may have amounted to tens of millions, perhaps $50 million or more. This is not an unusual event, however. Blizzard has cancelled several games in various stages of development in the past. Costs for unreleased games can be significant, but launching substandard games can harm the reputation of a successful publisher such as Blizzard. Expenses for development can be considered R&D, and benefits can include invaluable training, IP and technology that can be applied to other games," explained independent analyst Billy Pidgeon.
https://www.youtube.com/watch?v=jq-HwvYjLLg
https://www.rockpapershotgun.com/2010/08/16/redundancies-at-real-time-worlds/#comment-491791
http://kotaku.com/heres-what-blizzards-titan-actually-was-1638632121
Frontier Developments: The Outsider : https://www.frontier.co.uk/games/outsider/
Development time: 6 years - On Hold/Not Canceled/Canceled:
The Outsider is a true 'next generation' game focussed on a fresh, evolved gameplay experience, delivered with gorgeous graphics and built with key proprietary Frontier technology.
http://www.develop-online.net/news/the-outsider-not-cancelled/0108551
https://www.rockpapershotgun.com/2011/01/20/frontiers-the-outsider-has-been-cancelled/
January 20th 2011 - "Cambridge studio Frontier Developments has not cancelled production on The Outsider, its founder David Braben has told Develop. However, 17 workers at the group have been made redundant as Frontier rethinks its approach developing the game.
“There is still publisher interest in the project, and we haven’t cancelled it,” Braben told Develop.
“The priority has been reduced, but we’re still working on it,” he said.
“A publisher has not cancelled the project”, he later said when asked for clarification.
The Outsider has been in production for six years.
http://www.eurogamer.net/articles/2...n-says-the-outsider-probably-is-gone-for-good
https://www.engadget.com/2011/10/11/source-frontiers-canned-the-outsider-project-was-actually-t/
Elite 4 (now Dangerous): Announced in 2001 http://wiki.alioth.net/index.php/Elite_4_rumour_mill
2008: Frontier founder confirms that sequel to famed space game will land after The Outsider
Frontier Developments is close to finalising the technology that will power Elite 4, the long-awaited sequel to boss David Braben's space adventure series.Braben confirmed the news during a talk at the Develop conference today.
He said that the game itself "had not been forgotten" and that it would be released after his political adventure game epic The Outsider is released next year.
He admitted that the game itself, which he has repeatedly made refernece to in interviews for the past few years, has had a stop-start production as Frontier keeps testing technology and then rejecting it.
Braben described Elite 4 as a "really amibitious project" but confirmed there was a team actively working on it in order to get it right.
http://www.develop-online.net/news/elite-4-technology-almost-finished-says-braben/0103227
And there's plenty more if you like to go deep into this development reads:
http://gamerant.com/best-games-development-hell-118/2/
http://www.cheatcc.com/extra/top10gamesstillstuckindevelopmenthell.html
http://askagamedev.tumblr.com/post/148699307051/theres-murmurings-that-prey-2-was-canceled-by
Star Citizen:
http://www.gamasutra.com/view/news/..._to_the_delays_in_developing_Star_Citizen.php
http://www.gamasutra.com/blogs/Mich...o_Ground_Matters_of_Scale_in_Level_Design.php
TLDR: Video-Games suffer delays, the more groundbreaking a game is the more delayed it gets. As long as there is $$ and the company can make a fun game delays don't matter. Players don't care about delays if they are having fun.