They can have a meeting and change rules rapidly, including banning rentals.

The mayor of Los Angeles, Eric Garcetti, stated that evictions are currently banned.

I hear the United States government is working actively now because there is so much pressure on creative financing to find ways to restrict it.

I got banned from messaging

Those folks just drive cities to ban them outright.

Moral of the story: We could have continued to operate the first home without a license, but eventually the city will come to terms with this industry and we didn't want to be out of business if they decide to ban STRs in the city.

You better be prepared to get yourself sued out the *** for banning firearms.

They can ban renting or set rent quotas. 

Also depending on area a minimum rental term, if AirBnb style STR rentals get banned, another option could be temporary corporate housing (people coming to the area for 2-6 month corporate training courses, traveling nurses, etc). 

Earlier this year we had a Virginia landlord forced to sell her houses and banned from renting for 5 years for fair housing violations.