Edit: I should qualify this. Both sides of the issue have their shitshows distorting the debate with harassment and dirty tactics. At its core gamergate is a conflict between cultural authoritarians and libertarians. It is just the beginning of a wider issue, the old guard of the internet, those that believe in freedom of expression without repurcussion vs those who believe that speech on the internet should involve more social responsibility.
There is really no reason why they should not co exist. Gamergate is one of the examples however of what happens when both occupy the same space. Those who are afraid of their space changing vs those who refuse to occupy such spaces.
There's nothing stopping either ideals staying within their own space or creating their own, however the internet is a pressure cooker that inevitavly leads to a game of escalation and one up mansship where no compromise is accepted.