I disagree. When you give people strong economic incentives to ignore morality, some people will. Not all, but enough to make a hash of things. In any population there will be some people who will do things they know are wrong just to get ahead.

For Airbnb landlords I'm sure the thought process goes like " I'm just one person so I can't be having enough of an impact to be a problem. And besides, I need the money." But then enough people pile on and in aggregate they ruin the local housing market. But nobody thinks that they themselves are culpable