> Workers don't want to move into the overclass, they just want to live with dignity.

Got it in one. Would I like to travel First Class and stay in fancy hotels? Sure, but I’d much rather have a house that I can improve to meet my needs instead. Would I like a fancy luxury car with all the trimmings over my sixteen-year-old Honda? Absolutely, but the latter is paid off and gets us around just fine. Would I like that spiffy Hasselblad X2D and some lenses? You betcha, but I’d rather take a proper holiday for the first time in fifteen years instead of buying another thing.

The problem is that society at present isn’t organized to prioritize necessities like shelter and healthcare, favoring wealth extraction and exploitation instead. Workers don’t want megayachts and hypercars and butlers, we just want to live more than we work.

I love the idea of "downward mobility". In particular over the past 30 years we've created a new class of ultra-ultra-rich with even more wealth than the robber barons of the gilded age had, and we need to figure out how to dismantle that entire class. A puny 3% wealth tax would take over 100 years to knock them down, and that's presuming that their wealth is static and not growing at a rate much greater than 3%.

You clearly don't know what the term upward mobility means. It doesn't necessarily mean moving from one class to another - though that WOULD be included within its scope, however extraordinary an example it may be.

It can mean moving within a class.

Surely most people want to better their station. To argue against that is insane and counter to every observable fact about human nature.