the amount of money is irrelevant, as one injustice will never justify another one.
if you want a fair market, same conditions will need to apply.
that means rules for commercial applications in airbnb that correspond to other likewise business.
especially on "hot" markets like london, space for rent is scarce. why should people, who hire out their flats regularly pay less taxes than others who make a living in the same biz?
RE: Airbnb Cracks Down On London And Amsterdam Rentals