> The difference is Valve is a platform built with the intent for others to build upon. Not necessarily. I'm not selling a game on Steam, I built my business

> The difference is Valve is a platform built with the intent for others to build upon. Not necessarily. I'm not selling a game on Steam, I built my business providing a third party service around one of Valve's self-developed games. Generally speaking, Valve is friendlier to developers so it was a safer bet, but it was in no way a contract nor guaranteed. Twitter actually used to promote third party apps in their sidebar. Even though they long ago made it clear that third party apps were being hamstrung, for quite some time they actually encouraged third party apps being developed and didn't bother them too much beyond limiting their access to the streaming API.