Earlier quoted context omitted.
The next step seems to be to create a regulated market - anyone know what that means, or whether there is something inherent to Bitcoin that doesn't allow it? Coinbase has KYC, banking relationships and tax integration, I'm sure that can be extended to an exchange.
There is already a regulated market - the Winklevoss' Gemini exchange. They went out of their way to make sure everything about their exchange is in compliance, specifically for it to serve as the market for the ETF commodity. Unfortunately for them, the SEC, quite reasonably, requires more than one regulated market to exist for the underlying commodity, and probably preferably not owned by the company behind the ETF…
From the ruling, it doesn't really seem that was an issue. That Gemini does very little of the US and an utterly miniscule amount ogmthr global bitcoin trade made the surveillance agreement with Gemini insufficient, but a single-but-dominant regulated exchange would probably be sufficient.