it's not trickling down anywhere.
While it might be in most corporations best interest to have consumers that can afford to buy all the thing they are selling, it's also in their own immediate interest to squeeze as much money as they can, and keep it for them self.
And each year laws get passed (or reverted) that help corporations , and they get better and better at squeezing.
Look at the trends, middle class is disappearing, and more and more wealth is captured and kept at the top. (corporations are getting bigger and bigger, and rich people are getting richer)
and it's happening in USA even faster than in most of Europe. Pretty much the only place where middle class is growing is China (and other developing countries), but that is because they are still catching up.
So it can't be just the EU taxes.
Trickle down is nice theory, too bad it doesn't work in practice.
And no I don't even pretend to know what the solution is.
I just think that lowering taxes for corporations, will just make even more money for corporations, make them more powerful and not really help anyone else.
Mind you, there's more to it than that; just setting the high-income-band taxes high won't do it. Efficacy of taxation and control of corruption is also important. Ireland's an interesting case; in the 80s its income tax was quite high (and it was a substantial net beneficiary of EU funding) but its GINI index was the worst in the EU (it was actually worse than the US for part of the decade). Today, income tax is still quite high (though not as high), and it's a donor of EU funding, but the GINI index is middle of the road European, far better than it used to be. The main thing that changed, beyond overall economic development, is reduction of corruption; there's no point in having big high-income-band taxes if no-one pays them.
They will always have incentive to movw money into a tax heaven, their rate is zero