Both but I like to think it will be more good than bad. Either way I see Bitcoin consuming most if not the entire financial system. The only thing regulation will do is accelerate adoption because there are institutions that would love to get into it, but cannot because they have no legal guidance and don't want to take on the risk.
I recognize there are Bitcoiners that are strongly against this and I get it. Less government and all that good stuff. But there is just no reality where that will ever be a thing, so I just try to keep my expectations realistic.