The state also spends money on things that would not be funded any other way. Pure-scientific research, such as CERN. Policing for people too poor to hire private security services. The idea that these things are "the opposite of value" is ludicrous.
Also, if you're not going to tax Google and Amazon, then that gives large international companies who can dodge tax a huge advantage over smaller national companies who cannot. That undermines the underlying principle of capitalism: competition. Either you tax no companies, or all of them - any halfway position is worse than either.
