Yet AirBnB was born into a good economy (that, in fairness, was on the cusp of going quite bad), while Google was born into an economy that was just starting to recover from being bad. Not when you start but when your product is ready to ship may be more significant. By the time Google was ready for prime time we were in a good economy. When AirBnB was ready for prime time, we were in a bad economy.
Skate where the puck is going, as they say.