Even not riding a train without a ticket is ultimately enforced with a gun pointed to someone's head, as is paying taxes.

I'd be in favour of taxation that works like air friction does, the faster you move, the more friction increases, reaching a hard limit at some point. Instead of the opposite, the super rich and corporations effectively buying loopholes.

The ultimate solution to such problems remains intact: vote. Lobbying and voter persuasion is quite effective, so vote out those who create/preserve such loopholes and vote in those who close them. For all the whining consternation people exude about such problems, very few actually direct that energy toward meaningful solutions; the super rich and corporations have learned to direct such energy and exploit it accordingly.

Not that I disagree with that part, though of course one problem is what a politician promises before election, and what they do afterwards, is often not correlated at all.