AirBnb is the canonical example. They weren't first, so they built a business around doing something that in most places is illegal, and it caught on in a big w

AirBnb is the canonical example. They weren't first, so they built a business around doing something that in most places is illegal, and it caught on in a big way. I'm not discounting their UX, I'm sure it was a big part of their growth.