It really depends on how much money we're talking here. One person in the article earned at 16x multiplier on unspecified bonuses, and large salaries to boot. I personally do love my job in IT, but if I was moved to a position where I was doing the same type of work but earning 2x what I do today and earning crazy bonuses to boot, it would only take me about 5-6 years to acquire enough money to have everything paid off and enough alternate passive revenue coming in to never need to work another minute in my life. And again even though I love my job, when that moment happened I'd be out the door. And off to work on something else, or volunteer, or take a 6 month trip around the world on the cheap, or (fill in the blank).
There's a massive difference between liking what liking what you do for a living (with good people at the place of work), and doing what you want when you don't have to make a living.