Exactly.
I hate paying taxes as much as everyone, but I'm not super-rich, so I don't have options to avoid it. Once you go above a certain income class, your tax burden drops, in both relative and absolute values, because you can make use of loopholes that normal people can't.
Corporations are the worst of it all. As they can split up, merge and do other trickery that physical humans can't, they can exploit the system to the maximum effect. And since everyone else does it, they almost have a duty to do so, because otherwise their shareholders will grill them about it.
The problem is that the tax systems allow this, which is caused by countries competing against each other to attract corporations. Which, if you are able to see it for a moment from outside the pot in which you're slowly being boiled, is quite insane and perverted.
As long as the countries of the world readily sell out to corporations and super-rich, nothing will change. Only when they realize that (at least yet) they have the tanks and the guns and the corporations don't and maybe the power-relationship should be the other way around, and then work together to fight the parasites, this will stop. All it needs would be a world-wide agreement to, say, leverage a fixed % of revenue from every corporation, no exceptions, no loopholes, no special deals.