Only if these corporations are actually required by regulation to make these houses available for rent, and at market-adequate rates. If a company is as cashed up as this one is likely to be, they’ll only rent to people who are willing to pay higher rents, and if there’s nobody who wants to rent a specific property, they’d rather leave it sitting vacant than lower the rent.
This isn’t hypothetical, it’s happening in practically every property market where wealthy investors are buying up housing stock.