> To put some numbers behind this, in LA independent private landlords own 33% of rental properties, that means institutional and corporate investors still own the vast majority of rental properties.

This figure just shows how many LA properties are owned by an LLC or incorporated entity and is a very dubious figure. Most landlords incorporate to protect their own liability and to have access to business financing. Look at [1] for details.

> If there is a town of 8k rental apartments and I own 4k and you own 2k do you agree that we would run afoul of price fixing laws if we get together in a room to exchange information about our vacancy rates, state of the apartment and rents that we currently charge?

The problem here has nothing to do with using an app or talking to each other. The problem is that there are only two landlords. There is no housing market in the entire US larger than a subdivision that has this kind of a market.

> So your argument is price fixing doesn't work?

Everyone who price fixes has to agree on those prices. If a market has a lot of competition it's almost impossible to get everyone to agree on prices. And at that point, RealPage or price fixing isn't the problem, it's the oligopoly in the market.

[1]: https://cayimby.org/blog/institutional-investors-in-californ...