Because it is self evident. Pretending you don't understand is you acting in bad faith. If you actually cared about it instead of trying to bait an argument, you would be asking better questions. Instead you demand more to start a fight with and you will not get it.
I just find it neat that former and current "communist" (broad term for this) countries have a high level of home ownership. People largely like to pretend that under communism you own nothing, while in reality, nations who even for a brief period of aspiring to communism had given what were peasants who didn't own their own shirt a whole ass house and let them own it. No rent, No payment. Just supplied it.
It's neato. An interesting statistic that dispels partially the myth that (what the OP said I think, it may have been another person) that communism never built wealth for anyone. It did at times. Just not in the way we normally like to view it. The american dream to own your own home.
But I am not willing to sit and argue every minute detail of this explanation. Such as when one person said "not a single one is communist" Which while technically true, is not worth the time to discuss with someone who is just using a very common bait.