Because if you don't pay your taxes, the government will insist that you go to prison.
The problem isn't really what google is doing, the problem is that were letting our existence as free citizens in a society depend on a piece of blessed hardware/software we must carry around with us everywhere we go.
We need to strongly resist having software/to become strongly codependant on hardware broadly speaking. But especially software/hardware that we can't control and which is sold by two american companies.