I'm of the opinion that billionaires are good for the economy. Wages in the US are about double what they are in the EU.

There are some aspects in which the EU provides a higher quality of life, but those have nothing to do with tax rates or the concentration of billionaires. They're more related to things like good city planning allowing for pedestrian and biking-friendly neighbourhoods (E.g. 50% of commutes to work in Copenhagen are by bike, where in the U.S. it's less than 1%.), old cohesive cultures, and better, more developed culinary traditions.

The billionaires here are just a scapegoat because the rent-seeking parties need a target that is naturally unsympathetic for the public to direct its anger toward. The National Education Association is the largest union in the US with three million members. 99% of its campaign contributions go to the Democrats. I haven't seen a single policy that it advocates that is actually good for society. If you look at the jurisdictions where the teachers' unions hold the most sway, they make the least efficient use of public money. New York spends three times more than Florida per pupil on public education and has slightly worse academic performance.