I'd wager that's 80% of their business, nowadays.
If someone buys or rents a property that is bigger than they need, for the sole purpose of AirBnB-ing the extra space, that is a commercial mini-hotel.
In some jurisdictions this is probably a good thing, where you don't have the tourism volume to warrant building a proper hotel but where there is demand for tourism accomodations; in other jurisdictions it represents a wantonly inefficient use of real estate resources.
This has been my experience. Super-hosts with more than one listing. Apartments/homes that were obviously full-time rentals. So, not run by big corporations, but definitely run by somebody who has enough money on hand to buy property as a business venture.
Or maybe just vote manipulation.