I see bitcoin becoming an institutional coin in the nearest future. 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.
I believe it is quite the opposite in the long run. The amount of btc in circulation may increase
Institutions will mostly buy from custodial services (such as funds and ETFs)
Those custodial services may do something like fractional banking , saying that they own more than they currently have.
Anyone, even with that "bitcoin fractional banking " the high demand will probably lead the price upwards.