Bitcoin wouldnt be the currency for loans.

Bitcoin seems to be best for hording and spending. It holds value and can be transferred easy and cheap.

You can still have companies using currencies that incentivise loan/investing. Bitcoin currently exists and the loans keep being written.

I think as bitcoin grows its going to become big and boring. No 10x gains, not even 2x gains, like 10% swings over the course of a year. It wont be fun, it will be a store of value if you dont trust fiat. Right now I think its crazy undervalued which is causing the explosion of crypto. As BTC gets bigger, investment will start to look better as it provides better returns.