I think we are forgetting that debt/credit is a 2 way street. As a lender, lending must be both profitable and preferably low risk. The more sound the thing I am lending, the less inclined I will be to risk it on a high risk endeavour. Houses that decline in value over time will be high risk vs the Bitcoin being risked against them.
Lending and credit in a fiat system is much more practical because the ‘money’ you are lending out/borrowing is trash and houses appreciate compared to trash but not compared to sound money (BTC).
It is a challenging paradigm shift.