There are two new aspects to RealPage in terms of being anticompetitive:
1. Using information from one customer to help set prices for other customers. Once you hit a certain market percentage, this effectively allows you to set prices; and
2. If everyone uses the same software that spits out the same results then this is effectively collusion even if it's not actual collusion, as in the trope of dark, shadowy figures meeting in a cigar-filled room.
Every aspect of our life is getting financialized as companies seek to extract every dollar from us. You see it with PE buying up vet clinics en masse for example. If you've wondered why your vet bills have gotten so expensive, that's probably why.
Anyway, using rent to squeeze every dollar from people in a way that raises everybody's rents with the blessing of the state (which has been the case until now) is state violence. It is using the necessity of shelter to cerce money from you.
People in general don't see this sort of thing as violence but it is. Just like polie crackdowns on protests are state violence.