What’s missing from your view is the scope. yield star is provided the same data to a large chunk of the market (in some rental markets). Going online and looking at comparables isn’t one company setting the price for every market participant.
The scope isn't exactly what's important. Whether their selling to 80% of the market, 1% of the market, or even just to 2 competing landlords, what they're doing is still price fixing.
The only thing that's legal is doing your own pricing research, using your own methods. You can hire a consultant to do this for you, but this burden then transfers to them: they can't consult for multiple competing businesses.
