Seems like an inevitable idea.

Saw your post earlier, regarding small amounts. 

Your web of trust score would become your npubs credit score.

Not sure if nostr is mature enough to foster a big group of buyers and sellers yet, but ease of use might foster something we haven't seen before. 

Just my humble thoughts. 

 I know it seems like I’m just throwing out random ideas 

It just pisses me off
That Jack at cash app gets to be the lender and I’m always the borrower 

Like shit I’ll be the lender 
I wanna sit back and just collect money too Jack 

 Holding corn, while the rest of the world deflates, is probably similar enough.