After too many scam sites run people money I think now they already learn a lesson and I agree 2017 will be big and the scam sites will reduce thier innocent victim.
Nope. They're never going away. There are billions more stupid and greedy people. The sites themselves will become ever more sophisticated.
The best we can hope for is that the necessary operations such as exchanges become bulletproof. That's the real threat and impediment to Bitcoin's growth.
There are always going to be scum operating at the fringe that appeals to morons eager to throw their money at the best lies they can find. You can shout about giving up control of your private keys until your voice box explodes, they won't listen.