That's not to say we should just throw up our hands and accept every social injustice. But IMHO we shouldn't go around simplistically implying that all social ills will be solved by neutering the billionaire class.
Not to put too fine a point on it but this was basically how the Japanese post war economic miracle was achieved.
In this case it was America which ordered the Japanese oligarchy to be stripped of its wealth.
We've had decades of propaganda telling us that this is the worst thing we could do for economic growth though so it's natural to doubt.
The biggest problem we currently have with billionaires is that they are now so rich that the world becomes like a game to them and some of them are deliberately pushing us to a dystopia where non-billionaires become functional slaves (c.f. Amazon workers).
You’re right. Instead of implying, we should be taking active steps to do it.