First of all the comment he was replying to was talking about services like housing, transportation, and healthcare, which already are provided by the market and aren't really things the government has any advantage in. As for all the stuff it does pay for, at best it costs exactly the same amount as you have to pay in taxes. But the government spends money on a lot of other things with your taxes that don't really benefit you. So you would save a decent amount of money. And with no competition, the services they do provide cost a lot more then they probably could.
>You could lower the individual costs to you of a lot of these by finding a bunch of other people who also need these services, and pooling your money to buy them together. That's just how democratic government begins.
This applies to any service. Anything from food production to software development. A lot of people need those things, and they could cut costs if they pooled their money together for them.
>This is a dishonest characterization of the authority of a democratic government to levy taxes. Yes, if you don't pay taxes you owe, someone might come and take your property, and those people might have weapons or threaten you with imprisonment. But that is a measure of last resort, which will surely only be taken if you fail to respond to a long line of more reasonable measures. It does a great injustice to people who actually live under oppressive regimes to compare the collection of taxes under a democratic government to the kind of arbitrary, might-makes-right authority those people are subject to.
He was definitely using words with bad connotations, but technically it is true. Everyone pays their taxes to avoid having their property stolen or going to jail. The fact that force isn't applied unreasonably doesn't mean it isn't there.
>Like the government's other kinds of authority, it derives (most people think) from the consent of the governed.
There are people that don't consent. At best you could say the majority consent. You can justify it by saying it's better than any other system we know of, but not that people consent to it.