A large part of the Cantillon effect is only applicable in a fractional reserve lending model.

If you cannot make money out of thin air, the borrowing on your money to get more money doesn't work. For that, we need an expanding money supply.

If banks suddenly had to use bitcoin, very few would make loans.
The savings and loans may come back (as a dao or a smart contract) where savers, en mass, make loans.
But the concept that a bank, after being given your house, suddenly has a million dollars to lend to you will be gone.

The thing i still base my hopes on is that bitcoin is not inflationary (well, not in the 10x that banks currently operate) and thus, a bitcoin saved is a bitcoin earned.

My fear is that there may come a time when bitcoin is completely saved, and none of it moves.