Ok I'll bite.
This is Elite, which has its own lore, back-story, universe, and 30 years of legacy.
Some definitions :
Guild
Dictionary Definition
noun1.an organization of persons with related interests, goals, etc., especially one formed for mutual aid or protection.
Faction
Dictionary Definition
noun1.a group or clique within a larger group, party, government,organization, or the like:a faction in favor of big business.
Elite's treatment of politics within a star system is by means of factions.
There is no mention of guilds (as far as I have seen) in the Elite lore.
Elite: Dangerous is the 4th version of Elite. As such, it is attempting to recapture the Elite universe, lore, back-story, and legacy feel, using contemporary technology which was not available 20-30 years ago (e.g. vastly superior graphics and computing technology, networking).
Elite also influenced the creation of other games, such as EvE.
There has been a generation of people who never grew up with Elite, but perhaps grew up with EvE and other games, and are therefore unaware of Elite's story, but nevertheless thought that Elite: Dangerous looked like a really great game and therefore have started playing it. (There have also been players who grew up with Elite and have also lived through the times the EvE and other games were created). These players have observed and taken part in the concept of Guilds within these other games.
Elite, however, never had the concept of Guilds. Only political factions.
Elite is NOT suited for the introduction of player Guilds. It does not matter if players form Guilds using 3rd party tools (e.g. TeamSpeak) to form these guilds. They are still outwith the game mechanics, back-story, lore, and legacy. It is the fact that Elite does not have the concept of guilds which the groups of players who enjoy forming Guilds in online games are being frustrated in their attempts to somehow control systems such as Lave for example. This is what is leading to this pressure by these guild-forming players for FDEV to code in Guild support to E: D.
If players wish to form Guilds within Elite, they should reconsider. They should instead be pushing for joining in-game factions - as that is in-lore and entirely within the game's heart and soul. Factions should also not be player-controlled within Elite - ever. This is already the road that FDEV is going down with their background simulation - players have the power to influence which faction in a system gets to be the top dog.
In short - player-controlled guilds will never work in Elite, as this is not how Elite works. It does not matter if 100 players get together in Teamspeak and pretend they're in some [ABC] Guild. It is irrelevant and out-of-game. At best, they may be able to influence which in-game faction gains or loses control of a system (i.e. they will be able to influence the in-game background simulation), but there will never be an official "This system is controlled by [ABC] Guild".
And that is the way it should be.