> They already have, significantly, around 25-35% in developed economies

The thing is companies and even self-employed individuals of a certain wealth level know how to "(ab)use" it. From illegal but trivial and hard to detect tax evasion to financing personal lifestyle by having the company pay for certain luxuries (cars, computers, furniture, etc.).

If you have the wealth to have a dedicated office that dedicated office can be your man cave if you justify it with having all sorts of amenities for customers. And good luck to whoever checks taxes to find out how exactly things are used/not used.

All of that usually means that companies, company owners and high ranking managers get away with not paying taxes for a lot of things that everyone else does simply because they don't have a say within these companies.

And all of that is before you go to the tax advisor.

I am sorry, but if you do hard honest work the chances of you getting rich are beyond slim. Even worse when you do something that actually benefits society.