Generally, I think a plane, bus, or hotel are private property, like your house. Regardless of existing business arrangements, you should be able to deny service and ask patrons to leave your property at any time for any reason. Failure to comply with such a request is trespassing, and justifies forced removal. This action may well be a breach of contract, and that matter should be resolved in civil court, but that doesn't mean a business shouldn't be entitled to take it.
> you should be able to deny service and ask patrons to leave your property at any time for any reason
Nope, not "at any time" or for "any reason". Air companies are subject to several regulations, and another person posted it here: after boarding there are pretty specific reasons for why you can expel someone, and "because I say so" is not one. Not to mention that planes fly so you obviously can't "surprise deny" service at "any time".
At hotels you also can't throw people out on the street in the middle of the night, unless they did something wrong. Which is clearly not the case.
You also cannot throw out tenants without reason and without proper proceedings, for example.
Airlines are granted licenses to use of public property (airport gates and airspace itself). Therefore their allowable actions should be limited to those in the public interest.
