The reason why these "taxes" are efficient is really because they are payments for privileges the monopolists get from the government on behalf of the community

The reason why these "taxes" are efficient is really because they are payments for privileges the monopolists get from the government on behalf of the community. They are perfect pay-per-use scheme, the more privilege you consume, the more you pay. One can argue whether these are really taxes or just privilege fees. That's why groups such as single-tax or zero-tax propose that society can be run efficiently without taxes, because really the only "taxes" you need are those monopoly based ones.