I see bitcoin becoming an institutional coin in the nearest future.
Those heavily institutional money that keeps flowing are not going to trade, they will rather hold in. While retailers will do the opposite, go to exchange whether centralised or P2P and make money. And this will go on. So it's still 50/50 so bitcoin will not become institutional coin as you descirbe.
institutions are beginning to buy bitcoins in billions of dollars. this will automatically reduce the amount of bitcoin in circulation thereby forcing up bitcoin price.
Even if they don't buy bitcoins, nothing can stop the price of bitcoin from going up. As I have said, traders are the backbone of the ecosystem.