I think this is good, but I doubt it'll actually impact rental prices as much as people think, because the problem is fundamentally a housing shortage.

They might not share info but they will regenerate identical suggestions from market data for ask customers effectively price fixing without clear collusion

There seems to be nothing preventing YieldStar's actual business model:

1. Pick a rental rate. This can be based on public data, nonpublic data, or totally made-up.

2. "Strongly encourage" your users/customers to use the rate you picked.

3. 90% of your users/customers agree (historically speaking), legal collusion achieved.

I think it's a positive step for American housing market to slowly check off the list of pointless non-solutions so that we can finally arrive at the conclusion that the only way out of the crisis is to build housing. We're just following the San Francisco process here. Ban realpage. Tax vacancies. Complain about foreign investors. Put a tax on "mansions" that's actually a tax on apartment buildings. We will slowly, slowly check off all the boxes of the pointless things. Then 50 years later we can start building houses.