Now, of course, they graduate and move out and then the real world starts repeatedly smacking them over the head until they learn to coexist with the current realities. But that happens with the current success-oriented parenting styles, too. Lots of kids work hard to succeed at the achievement markers, develop some notion of entitlement and self-import, and then graduate into being burnouts, addicts, and recluses - if they didn't already become anxious messes from the workload. It's not helped by driving that lesson harder and deeper.
Balance is more important. If they experienced balance as kids, they stand a chance of finding their way out of imbalance as adults and in turn fighting to bring about the world they want to see, instead of navigating blindly from a point of despair.
Developing kindness isn't the only thing to ensure balance, for sure, but it's one reasonable starting point.
There is a lot more to life and happiness than getting another promotion or raise. There are also a lot of good people that get recognized for their goodness and rewarded for it.