This is an undenyable fact.
A better question may be; "Who changed the scope, and why?"
Actually the scope of the game has always been the same. They were going to do all the currently promised content/features but not at release. That new feature/content was going to be done through expansions. Basically what Elite is going to do. Push out the core gameplay and then add on as you get more funds to develop the expansions. So the FPS/Capital Ships/Multi-Crew Ships etc. all were going to come down the road in expansions.
But what changed was basically them getting enough funds to do it all at once instead of in expansions. I kind of like Elite's method, concentrate on the core aspect of the game and then start introducing the new mechanics though expansions. It allows the entire team to focus on the same thing and hammer it down really well instead of being stretched out on multiple different modules. You still have all the cash but a more defined path/direction.