> what's the difference between me using AirBNB and me knowing a friend who let me stayed at his place for 6 days and I just happened to give him some money as a thank you gift?
Its the difference between an informal, non-contracted exchange of gifts between parties known to each other with an established relationship on the one hand, and a contractual, arms-length agreement between strangers through a third-party intermediary with arms-length contractual relationships with both parties on the other.
As a general rule, in most domains, the latter tends to be subject to greater regulation than the former, both because, as an arms-length agreement, there is greater need for protection from abuse and, as a contractual agreement, it necessarily invokes the threat of state action.
Its the difference between an informal, non-contracted exchange of gifts between parties known to each other with an established relationship on the one hand, and a contractual, arms-length agreement between strangers through a third-party intermediary with arms-length contractual relationships with both parties on the other.
As a general rule, in most domains, the latter tends to be subject to greater regulation than the former, both because, as an arms-length agreement, there is greater need for protection from abuse and, as a contractual agreement, it necessarily invokes the threat of state action.