I don't really see any other solution, can you explain it?

The ultra-rich are taking too great a share of every nations wealth. And they keep taking more.

Taxes are the only option to redistribute wealth.

Or are you talking about enabling strong unions and anti-monopoly laws with teeth to reverse the growth?

As I doubt Garry's in favour of that either.

Taking? From who? They got this money by appropriation and not by mutually agreed upon transactions?