I think it's clearly advertisers, tumblr and reddit are going through a similar cleanup as they mature. You start with free principled user focused values, grow to a critical mass, then disneyfy for that sweet cash. This leaves a vacuum for a new entrant to go through the same process. Maybe that sweet spot between basement project and corporate success is where ultra freedom is destined to remain.

I think this mechanism is the core of why we feel a vague sadness when sites like github get bought by big corps. You tacitly know it's the beginning of the end on some dimension.