Why would you want to be a force for something like that? Spend your energy doing something productive. I think Airbnb has an honest mission and the legality will hopefully work itself out. I guess if you're just looking to make a quick buck, maybe. But then why not go into finance or something, rather than build a startup that aims to hurt startups?
Force for what? For preventing contractually-prohibited uses of my property? That sounds like a fine application, even if it doesn't match your worldview.
I own a home (remote, long story). I hope my property manager monitors my realestate in this fashion. Legally, I'm on the hook for all sorts of eventualities and insurance related to the property (eg. fire and perhaps even injury). I'm not willing to foot the extra risk (or bills!) of having a tenant inviting itinerant AirBnB visitors -- that's why subleasing is not permitted by my contract with the leasee.
Would I be happy with an alternative that yields higher net returns than a property manager? Absolutely. Do I want it done on my property against my permission? Hell no.
Agreed. I really don't understand the sense of entitlement that people have when it comes to doing things that are specifically against the lease they signed upon renting and apartment (or against the CC&Rs of the HOA they willing bought into).