I thought it meant that Google et al are all trying to solve the "pizza in San Francisco" problem (i.e. trying to find local businesses) and not trying to solve

I thought it meant that Google et al are all trying to solve the "pizza in San Francisco" problem (i.e. trying to find local businesses) and not trying to solve the problems that people are actually turning to maps for, because "pizza in San Francisco" is an obviously-monetizable problem.