No but this is profoundly stupid. The status of petit bourgeois is not determined purely through ownership of tools, it is through the ownership of one's own labor power, which is to say that that labor power is sold directly and independently on the market, B2B or B2C. Uber drivers and Taxi drivers (at least in Austria) cannot be said to be running an enterprise because without Uber or the Taxi company, they are nothing, even if they own their own car. To argue otherwise is to argue that the construction worker who brings their own hammer to work loses proletarian character, at least in a small way. As OP correctly points out, it is the company delegating ownership of the tools of production that the proletariat that the proletariat's exploitation does not decrease, but increases. On top of this, Uber drivers do not sell to the customer, instead the company determines the minimum fare the driver would be willing to accept for the ride.