Here in Switzerland (once again, sorry for being generally mixed up with Sweden), most buildings are owned by investment funds, life insurance companies, banks, etc..
So the exact opposite of what you describe happens - to maximize profits at close to zero risk. Cities are having a really hard time keeping a lid on companies that restructure whole buildings to use as short-time rentals.
https://www.cbc.ca/news/business/marketplace-airbnb-covert-l...
It was impossible to study most days because of kids to illicit renters running around screaming and biking in the corridors.
But it's just a civil agreement between property owners, isn't it? Is breaking that civil agreement a criminal matter that needs police attention?
Lost you there, how exactly? I live in one of these buildings. They can just tell you they are relatives or housesitters, then what?
If a person in a building that is not Airbnb-able, trust me, they will tell their tenants to say these things. I have experienced it myself in several Airbnbs i have stayed in.