The reason they won was because your average gamer hated SJWs more than Gamergate. They didn't see gators as a threat to them, they saw SJWs as a threat. The one thing gamers hate is censorship, and SJWs are fundamentally pro-censorship, and Gamergate was "anti-censorship". I'd say winning can be measured by sites which lost a good bit of traffic were generally on the pro-SJW side of the spectrum. People chose places they considered less intolerant of them.
BTW it's also not the audience size that matters- it's the spending power. The SJW crowd just don't spend money on games as a general rule. That also varies from game to game.
That said, Gamergate is losing now because it's been tied in too close to Trump- and that's driving the saner folks away.
In the end, if you don't make what people want, they won't buy your stuff. Especially when their dollar is stretched.