Etsy would be another fine example: starting off as a platform for artisanal, craft and maker communities, then at scale opening the floodgates to become a mark

Etsy would be another fine example: starting off as a platform for artisanal, craft and maker communities, then at scale opening the floodgates to become a market for mass produced factory knockoffs and junk, infuriating and adversely affecting their original user base.