As I said last time this came up, the answer is a maximum wage. We can still set the maximum wage beyond the level of most people (e.g. $1,000,000 per annum after tax). I don't see how it would discourage innovation, but I do see how it'd help curb financial inequality.
If we set a maximum wage, driven people would simply move to another country. There is plenty of evidence for that as well. The Beatles, for example, came to America to avoid the grievous taxes being levied in England. U.S. companies locate offices in more tax-friendly locales all the time too.
Okay, can you show me some evidence?
> "The Beatles, for example, came to America to avoid the grievous taxes being levied in England. U.S. companies locate offices in more tax-friendly locales all the time too."
Both of those are examples of tax dodges. Maximum wage is different, in that people would be required to live in the country they made their main income in. Sure, you could move to the Cayman Islands, but good luck finding enough work there.
We should be closing tax loopholes too, it's not an either/or situation, we can do both.