To start - your 'very first example' is not even really 'a problem'.
'Without rent control' - you get kicked out of your abode every few years if your salary doesn't keep up with housing inflation. With rent control, you have the option of 'having a home; you decide when you want to leave (for the most part).
The answer to the 'second example', 'adversarial tenant/landlord' is that the theory doesn't line up with reality for the most part. Again - in most rent controlled areas this kind of stuff does not happen, especially if it's entrenched in the culture. It works well in a ton of housing markets like Quebec, Germany.
The primary concern about rent control limiting expansion ... just does not exist. It doesn't really impede new builds.