If this in the long run proves that it diminishes the level of volatility, then I think this is the best thing that happened to Bitcoin in recent years. Volatility plays a major role as to why the average joe type of people are holding back. But as with all things, if doors are closing at one place, elsewhere they will open up again. It eventually may result in traders shifting to other countries where these regulations don't apply. If you look at it from that point, the problem will only move but not completely vanish.
There is a major difference between BTC and fiat.
21.000.000 will be all there is en ever will be in bitcoins.
Unlike fiat money were it endlessly can be printed , this 21.000.000 max suppley does not allow leveraged trading....
Leveraged trading can only appear in a fiat money system were money can be crated from thin air!
If they do leveraged trading in BTC they will end up not having/owning the BTC's they are trading what will kill a exchange in a instance!
that's why you always need blockchain proof!
If you cant find bitcoins in your wallet address back in the btc blockchain...
there is a good change those btc do not exist.