Part of me gets where you're coming from, however for some (many?) being tied to a regular mortgage payment comes with its own risks. Take the tenants I'm referring to in this thread, young couple, 3 kids, she doesn't work, he seems to get jobs that aren't secure, so he finds himself in/out of work. In a rental, and obviously I don't think this is great from a LL's perspective, they can slip into arrears. Here in Scotland, it's becoming ever more difficult to evict tenants (clauses that used to be mandatory are becoming discretionary to the court) so they can often remain in a rental property month in month out running arrears.
I'm not sure they'd have the same flexibility if in a mortgaged property? I'm not saying they wouldn't, I'm saying I don't know.
Based on what you said, I'm guessing that many may be selling up or will sell up once they go through that type of hell.
Years ago a friend of the family in the early 90's lost their home and the btl. They jumped on the bandwagon re rising property prices, met a awful T, interest rates shot up - the AST the LL drew up himself was good as worthless especially we fraudulent T's who were also subletting - the bloke lost both properties then his wife left him with the younf kids. It was awful. My parents and others helped him set up a rental place and my parents and others gave him money to get him back on his feet after depression, unemployment, etc. The bloke now in his 70's new wife a younger one now lives happily in a modes house in a not so nice area in Essex.
T's have items repaired FoC but owner-occupiers will lose everything even if they have paid tens and thousands of pounds off on their property should they not pay the mortgage.