Relevant:
http://www.nytimes.com/2012/12/01/your-money/a-warning-for-a...
http://www.businessweek.com/articles/2012-09-27/airbnb-to-ta...
As soon as the hotel industry perceives AirBnB as a legitimate threat --we're getting there in NYC-- it will take action/lobbying to the next level, and it won't be pretty. For starters, they could ask the IRS to demand a full DB dump of all hosts to tax their (mostly illegitimate) income, which I suspect is not reported as such. The pool of available inventory will dry up in no time.
That said, I am wondering if he means that they can pivot and buy their own buildings to become full-fledged hoteliers.