Answer: it’s very easy. The more you pay taxes, the more you have theoretically the possibility common works be financed (streets, schools, street light, police, administrations, etc.). The less you do, the more you have chances money ending up in mafia: drugs, prostitution, gambling, etc. after having sunburned itself in the Bahamas. Now, the first does only happen if 1. political entities are obliged to a wise distribution of money, otherwise chances are high it may end up in hypothetical, illusiory, and/or absurd investments of the kind, high technology without finality or unhealthy libraries (Miterrand’s computerized one in Paris) 2. and these are sufficiently under control so as to warrant the money does not end up in their own pockets. On top, lobbying is forbidden, too, in order to get the money for a private company that is not necessarily competitive.
Conclusion: it does mostly affect economy in this that it provokes horrible quarrels concerning who is going to get it.