Spain and Brazil push global action to tax the super-rich and curb inequality

The super-rich don't stay rich by just sitting on their money, they invest it.

These countries should focus on encouraging investment there - by getting rid of bureaucracy and red tape, make it possible to hire across the whole EU a lot easier, without needing separate tax registration in every country, etc.

Lower the barriers to entry wherever possible - no long application processes for developments with endless consultations, no arbitrary minority language or qualification requirements, etc.

Income inequality is a good thing, but there needs to be equal access to education and opportunities and the lowest barriers to entry possible.

The specific issue here is that revenue from capital is taxed less than revenue from labor, thus disproportionally impacting the poor & middle class.

Can you explain how taxing the rich even less will solve this issue?

Ideally there'd just be a 10% tax across the board - sales tax, income tax, etc. like the https://en.wikipedia.org/wiki/9%E2%80%939%E2%80%939_Plan

No complicated exemptions, or complicated progressive bands, just keep it simple and eliminate bureaucracy. Then people can manage their own pensions and insurance.

This could be accompanied by a Georgist Land Value Tax to encourage development and innovation too.