Units converted to AirBnBs were not designed for short-term stays or taxed on that basis, and generally AirBnB only exists because it leveraged regulatory arbitrage quickly enough to grow to the point it could lobby for changes to the law. But after multiple studies in multiple cities confirmed that only a handful of investors benefited from loose unregulated short-term rentals, the pendulum began swinging back towards regulating them like the hotels they are.

There have been articles about this. It sticks in my mind because I used to be in insurance.

Residential buildings were not intended to be used this way and all the policy and infrastructure points to "No, really, you weren't supposed to use this as a commercial vehicle. That's not what all of society agreed to for this piece of real property."

For landlord insurance I'd pay about £300/year in Scotland, and €60/year in Finland. I'd be surprised if there were short-term policies, as distinct from long-term-tenant policies, that we significantly more expensive than that.