Restaurants and grocery stores do not rely on a single, publicly-owned piece of infrastructure to run their businesses. Uber's business and tax models (like many in the online tech, or "sharing economy" sector) have purposefully sidestepped contributing to civic coffers at any level - municipal, provincial, or federal. But Uber sure wants to use the very infrastructure that they don't support.  

Do we think Uber drivers are claiming their income and paying taxes on it?  Yeah, sure. The whole "sharing economy" is based on getting stuff for free or through non-traditional means, without government intervention. It'll be interesting when governments really have to start raising taxes in order to cover cyber-business or sharing economy-generated tax shortfalls. Schools, roads, hospitals, and even restaurant health inspections -
 everything that makes this a great and safe place to do business - it all costs money!!