Once they do that, they become the ruling class and the elites. Then their children are no longer working class, and are now the enemies.

You're missing the point: If the working class becomes the ruling one finally the majority rules, not a rich elite.

In such a case, I won't feel better yet will I? So we'll try again...

Just like we've tried in the past again and again and again... and a few thousand years later here we are and we will keep trying :)

Exactly. A lot of progress was made in that time, so I have little patience for defeatism.