Correct, most voters don't understand enough to demand effective redistribution policies. Speaking from experience, if you get involved in politics this becomes the bane of your existence.

There is some redistribution now, and it's gone up recently in Canada, although I'm not sure off the top of my head what the global trends have been. It's just slower than the natural self-accumulation of wealth.

How the New Deal got so much traction in the US is a big mystery, honestly - it really was a unique event. People weren't smarter or more educated back then, and on the other side of the Atlantic they just elected fascists, who can tell a hell of an emotionally appealing story. (The USSR definitely managed redistribution, although they came straight after a brutal monarchy and a war without a significant liberal democracy phase, and struggled to keep growing over time)