There's no point working hard if you're not working smart; if your priorities are wrong, you're trying to do too much, or ultimately, you're pouring your heart and soul into a business that just isn't viable.
Of course it probably isn't healthy to make a business the center of your life, but people who do will likely have a higher chance of success in that business because they are willing to put forth a lot more effort to keep it going than someone who isn't as committed, and therefore not as concerned if the business fails.
If you don't, though, you will likely be outcompeted by those who do.
It's a simple, obvious truth, not a value judgement.
Are we talking about employees, or founders?
You may well end up being outcompeted by someone who put in forty hours a week of smart, correctly applied work.
Let me know when that actually happens.
That's what I think a lot of people miss. Most young professionals lose tens of thousands of dollars and spend several of the most productive years of their lives learning these lessons. Except they refer to the experience as "college," not "entrepreneurship."
Either way, education costs money, and the only question we all have to ask ourselves is, how much do we want to learn? We go to "school," then we graduate and move on.