Goldman has really really REALLY deep pockets. So do their friends.
They can make market, be the competition, and bury any other
aspiring markets.
That's assuming the people who migrate are GAMBLING AND INVESTING,
and don't really give fucks about alternate, anonymous,
society-changing, 'money'. Goldman and their friends will waste
them. I speculate(sic) It won't affect those who create 'closed
systems' of exchange as badly.