Markets need massive amounts of legal structure and regulation to make them efficient. Including taxation as part of that is an excellent idea.

And if we get to Piketty-inspired corrections for r>g, part of that will include eliminating economic rents the way a LVT does.

I agree with you, providing defense and protecting real capitalism, stopping oligarchies/long term monopolies from forming is important, to be able to have a return on investment on the taxed capital in the country.

As I wrote before, countries are competing for investor money, that's why it's important how they collect and distribute taxes. The counterforce is usually corruption inside the political system though.