Except landlords would still landlord in that scenario - even if a rental house didn't cash flow for the 20-30 years of the mortgage, what do you think happens after the thing is paid off?

Weird, the landlords own the place outright & still are able to extract rent for the next 100 years.

It blows my fucking mind that rents are even close to what the mortgage payment is, it's almost like the system is straight up designed to turn a ton of fuck heads into parasites landlords.