What is the least that will happen to ETH and its ecosystem IF ETH is declared (unregulated) security by SEC? What is likely to happen or follow if thats the case? What would be the heaviest possible consequence?

I'm reading something about exchanges needing stockbrokerlicense to continue to offer ETH. I'm guessing soms fines will be dealt out to those involved, but after paying off the fines, can ETH continue as before? Will there be a (lengthy) courtcase like XRP? 

Anyone here with an informed take on this?