> Is it collusion if everyone is shopping their competitors prices?
Not at all! Competitors are free to publish their prices, to whoever they want, for loads of reasons, but colluding to raise prices isn't allowed. Realpage advertised this as a pricing cartel as a service though.
Prices for rent used to be much more negotiable than they are today, in part because of Realpage. From personal experience, landlords before Realpage were more willing to take a lower offer on something that had been vacant a while. But maybe they should have kept it vacant if they knew they were already the best price for similar accomodations.
>and might I add, imagine this algorithm is possibly “the most perfect algorithm at generating positive rent growth” to which there is no improvements possible...
A perfect algorithm with global knowledge is what the act is trying to prevent, because tilts the market entirely in favor of supply against demand. Same effect as a monopoly, which is why it's illegal.
A lot of this stuff was hashed out in cases around a hundred years ago, by people who tried and failed similar hope-theres-a-loophole arguments, and there are plenty of loopholes they could've hid behind, but instead:
"According to the complaints, RealPage’s own marketing materials make clear that it “utilizes the competitive data” of competitors, to allow those competitors to “outperform the market,” As RealPage allegedly put it, it offered clients “the ability to ‘outsource daily pricing and ongoing revenue oversight’ to RealPage,” allowing RealPage to “set prices for its clients’ properties ‘as though we [RealPage] own[ed] them
ourselves.’”