10% of a few quarters of purchases is still a tiny tiny tiny fraction of the market, and not enough to coordinate pricing. I think a far bigger concern is shor

10% of a few quarters of purchases is still a tiny tiny tiny fraction of the market, and not enough to coordinate pricing. I think a far bigger concern is shortages of housing as individual homeowners and landlords act as a group to suppress local supply of housing. Local city councils tend to be controlled by such real estate interests. Corporate purchasers can piggy-back on that sort of regulatory capture without expending a single dime.