Windows Phone is a platform that died cause developers did not get it. I think the issue I have with your PS3 example is that it is PS3, PlayStation was already on its third iteration. With PS2 being one of the most successful consoles of all time, companies were baked into that ecosystem. Whatever Playstation gave them, they had to work with, they fed their families that way. But I agree with the comment above. Developers support platforms (That are not yet popular) because they find it inspiring, they, in turn, give feedback to what they dislike about the platform, and if the platform has good management and responds quickly, developers work to grow that platform out. All great platforms I know today are because the company behind them inspired developers on what they could achieve using it.