There isn't a word in here about "seizing property," but if pretending I'm a communist helps you sleep at night, feel free to continue to live in that alternate reality. (I'm not, BTW.)
There are tens of millions of small-time land-lorders in American who do significantly greater collective damaage than Blackrock.
Generationally affordable homeownership will be realized when we ban usury and rent-seeking and build sufficient supply. Future generations will see this as an obvious fact of reality, and see anyone who thought otherwise as either unbelievably selfish or utterly deluded.