> Indeed - because it's not necessarily an investment for one's own maximum gain - it's an investment in communal infrastructure where, yes, others might profit

> Indeed - because it's not necessarily an investment for one's own maximum gain - it's an investment in communal infrastructure where, yes, others might profit more from than you. However, in return, you might also profit from the contributions of others. You're assuming that tax money centrally invested will yield more returns to the community as a whole than it would were it invested by each individual. We've got decades of research to demonstrate that's not true. We probably need to fund some services communally, despite some of the enthusiastic & interesting proposals of anarchists like David Friedman. We may also need to investigate some form of universal basic income so that everyone has enough money to spend & invest as he desires. We probably also need to have some sort of information safety net to prevent parasitic 'investment' opportunities. But in general, a single centralised entity just doesn't have the information to make wise decisions about the utility of all investments across all citizens.