You wouldn't!
Your thinking is exactly correct, and I explain precisely why there will in fact be zero credit after fiat dies, only equity in this brief thread. That means zero private credit as well, though without government interference, equity arrangements around revenue share agreements will be far more flexible.
Your discomfort is your conditioning from fiat and the psyop around Keyensianism leaving you with FALSE beliefs around downstream implications of this. "Oh, it means... So therefore..."--nope, it actually doesn't mean [] at all.
If you are a bitcoiner who thinks credit will exist after fiat dies, you are a rather lucky person to be in bitcoin today given you are the sort to have that misconception!