If we're all honest with ourselves, none of us volunteer to pay more tax than we need to*. These people are just doing it on a bigger scale, using more imaginative methods. If there are loopholes, it's up to the relevant tax authority to close them.
Although embezzling funds on a mahoosive scale and robbing your citizens blind is taking the piss a bit, maybe.
*Mrs Gremlin pays her and her business partner a salary small enough to under the tax threshold and the rest in dividends each month and at year end, in order to pay less tax. Ditto a fair chunk of the P&L goes into their pensions for the same reason, both personal
and corporation tax. Why wouldn't she?