Comment by dgrin91

Thats not what other people's kingdoms means. Basically all non-trivial apps are already built on VPSs. The other people's kingdoms refers to how people interact with your app. Take Zynga - they were not literally running on FB servers, I'm sure they had their own VPS, but their games just had 0 reach outside of FB. When FB decided to change things Zynga just got fucked, VPS or not.