I think there is more to it than this, everyone is subject to income tax, when over a certain threshold, the difference is the rich can afford to pay for advice on how to utilise tax havens etc.
There is also a difference between tax avoidance and tax evasion.
Closing down tax havens, or certainly closing tax loopholes would be a good thing, however actually making the tax system far less complex could also be something that should be considered, the more rules there are the more likely you will find a way to slip through.
We should take in to account philanthropy, if a person who earns a 'lot' of money invests that in to something else to help people, perhaps that should be taken in to consideration, I think it is and these donations can be used to offset the tax bill. Stop that and you end up with more people losing out.
What is also perhaps needed is a universal basic income, so we ALL earn a certain amount of money, this could be opt out as if you are already earning the amount some soccer players do, there is peraps less need for UBI.
I am not sure how UBI works though, is this say you get say 10K from the government, this is set in stone, then an money after that, starts at 0 so if you earn less than the lower tax band which I think in the Uk is 11k, then you can in effect earn 21k a year, without paying any tax, anything over that 21k, is subject to the lower tax band (as it is over that 11k threshold). As I said I don't quite understand how it works.
We need ideas as to how to move forward with everything, so we can re-distribute wealth AND opportunity to everyone properly.
