Simply false. These are the steps involved in "declaring" your property to be rentable:
Step 1a: If you rent your place, ask your landlord for permission. Step 1b: If you live in a condo building, ask your condo association for permission. Step 1c: If you own your own house, ask your spouse for permission.
Step 2: Put an ad on Craigslist advertising your rental.
Step 3: There is no step 3.
Declaring a property to be rentable is literally a trivial exercise unless you're going for short-term (aka "transient" or "hotel") rentals.
For example, if I own a single-family home, my ability to rent it out is restricted by zoning rules. I would have to look up the Certificate of Occupancy and potentially make changes if I intended to rent my place out. It could even mean involving an architect because the building would have to meet the structural requirements for a rooming house. There are lots of redtapes.
I'm not really sure there is a "problem" here. It's the locals who get to decide if their laws need updating or not. I'm willing to be a ton of Airbnb guests is not what the locals want.
AirBnb definitely solves a problem and generally at a much cheaper price. We need to update our laws to let it do that in a sustainable manner.
Edit: Corrected rentable to short-term rentable