Institutional investors own ~3% of single-family rentals nationally. But per CoreLogic they're 29% of purchases in the starter home tier. That's the market where we first-time buyers actually compete.
In some metros it's more concentrated.
Atlanta: ~30% of single-family rentals corporate-owned.
Charlotte neighborhoods in 2022: 50%!!! of sales to institutional buyers.
So for your 1-2-3... maybe something like?
1. Institutional buyers concentrate in starter homes where they're 29% of transactions, not 3% of stock
2. Target metros/neighborhoods go higher still
3. Real estate uses comps-based pricing - their winning bids propagate to surrounding valuations
The mechanism isn't inventory control, it's just a buyer with a different utility function (rental yield vs owner-occupancy) systematically outbidding price-sensitive first-time buyers. In a thick market that gets arbitraged away. In a thin market with sparse comps, each transaction is a price-setting event.
The St. Louis Fed found institutional presence specifically increases price-to-income ratios in the bottom tier.
If you're evil corporate Landlordman You don't need to affect the whole market. You just need to cut off the bottom rung of the ladder.
Is this Trump move the right one? No frickin idea! But I do think we need to reckon with what's actually happening to first-time homebuyers. I bought a place in Englewood Co last year and ... it was pretty rough.