[LUmBULtERA]

>Perhaps they have a low marketshare nationally, but they have a high marketshare in a few specific markets? Maybe, lets see what the DoJ says.

I think it's very much this. National market share is meaningless. I live in Northern Virginia -- some SFH that rents in another market is meaningless for someone looking for an apartment here. In this area, it seems very much that all large multi-unit apartment buildings use RealPage. Individually owned condos that are rented out exist, but of course their quantity is very tiny compared to the number of apartment towers/complexes. SFHs, likewise, are poor substitutes, because someone in the price range of a studio, 1 or 2 bedroom unit isn't going to rent a SFH and splitting a SFH brings problems of its own.