When we applaud the AirBnBs and Ubers for going around regulation to get the outcome we want, isn't it inevitable that many will use some to exact the outcome they want but that violates social rules we thought were in place?
People using Airbnb to rent out their property are effectively breaking the laws and due to loopholes in regulations cannot be held responsible. It's a lot more than just social rules.
[1] https://www.citizensadvice.org.uk/housing/discrimination-in-...
Also, the racist does not use this property as a primary residence. It's one among many vacation rentals she owns so she has no protections under the law.