Co-ownership is kind of a horrible idea overall. What happens when one of the 4 people wants to use the property as collateral for a loan?

Not to mention that this promotes increase in property costs without fixing the issue. If the norm is to continue pooling money between individuals then real estate can continue to raise prices. Then you just need 6 friends 10 friends 14 friends etc. we need a market crash and we need corporate residential ownership to be heavily regulated.

Have any links or extra info on that?

Can confirm. Worked for a few years for authorized retail and they leaned pretty hard into it.