Visitors (international and domestic) to New York City in 2009: 45.8 million Visitors (international and domestic) to New York City in 2008: 47.1 million
Guess when AirBnb became Airbnb.com and popular in NYC? 2009.
I realize correlation != cause but you are claiming a similar argument. Now, you could blame the recession...except it was 2008 when it was at its worst.
Visitors (int'l & domestics)
2013: 54.3 million
2012: 52.7 million
2011: 50.9 million
2010: 48.8 million
2009: 45.8 million
2008: 47.1 million
More interesting is that visitor spending and hotel prices and occupancy also did well. I agree that while none of this is definitive proof on anything. However it is not consistent with AirBnB seriously harming either hotels or visitors. Appears to be a win-win.
Hmm. Now you can blame the great recession but growth did slow.
So lets take 2011 to 2013 [after the Great Recession]: 54.3-50.9 = 3.4 And 2003 to 2005: 42.7-37.8 = 4.9
Notice the difference?
You can't claim this supports your position without cherry picking the data. Its completely worthless.
This seems to be the case in NYC[1]. Despite growth of AirBnB visitors, visitor spending and even hotel occupancy are up. And it's possible these stats may miss many AirBnB visitors - not sure hot they are collected but likely based of hotel occupancy.
[1] http://www.nycgo.com/articles/nyc-statistics-page