Not going to happen, but create social sanctions that make this sort of behavior socially unacceptable?

Yes.

The Swedes have it (lagom).  I know that it's a folk aphorism against the American Amish "All things in moderation." and the belief that one should be "plain" in the sense that they do not seek to distinguish themselves from others based upon their material possessions.

Wouldn't it be nice if there was a recognition that the value of equality needs to has to prevail in the vast majority of social relations if democracy is going to work in the long term?

And I'll give my consent to any government that does not deny a man a living wage-Billy Bragg