The money might not vanish, but you're still working Monday through Wednesday for the government in France. It's as though the government was partly the business owner. The question this raises is whether the benefit for society in the long-term is actually worth it. The larger the share the government takes the less motivated people will be to make things better themselves.
The expectation that government provides certain services...
The nature of fiat currencies and what actually makes the USD worth anything or even usable as a medium of exchange...
Basic economics. Government spending == business revenue; the money doesn't just vanish.