Look what happend the first 10 years since BTC's inception. Another 10 years isn't a bad estimation really.
Decentralized exchanges will be the next big thing, allowing people to trade with each other with 0 trust issues against any centralized entity.
The ONLY truly Decentralized Exchange we've got right now is the
Blocknet DEX. Anyone trying to convince themselves that there are any other REAL DEX's out there is simply fooling themselves, and NO Bisq, Waves, Binance, IDEX etc. isn't decentralized as they ALL lack from centralized points of failures one way or another (prove me wrong).
Over the next coming years, nodes hosting DEX's like the Blocknet DEX will make a boat load of money doing so, competition is on the way, there's no question about that.
The banks will lose this battle, the people will win.