Example: consumer goes to idverificationsite.com, registers there for free- they ask out of wallet questions to verify identity, potentially do a minimal background check too.
You then use this login with Yelp, AirBnB, Getaround, etc.
Yelp, Getaround, Airbnb pay idverificationsite.com some small amount per verified person. Removes some of the friction of ID verification/spreads cost around.
Sidenote: the BBB is the worst offender of these protection rackets - http://feefighters.com/blog/bbb-accreditation/
Also - I've just decided to start posting reviews to Google rather than Yelp, they lost me as a product after reading this thread.