Is always moving higher the right way?

Some days ago I read an interesting thesis in a newspaper: Every company, our whole culture is always looking for increasing profits, to grow. But is this really needed?

A pro making his living out of poker or/and betting are in fact nothing else than a small company. He also always tries to earn more, to stake higher, to jump up in limits.
This surely is a must to some extend. Poker and betting is no regular job. You don’t have any old-age provisions, neither there is any guarantee you will still beat the markets in some years. You can only seriously start as a betting pro if there is the realistic chance to earn some millions for the next say decade.

But what if you reached this point? You have a million in the bank and you beat the poker games / make a great yield in betting. The way nearly everyone goes is to play higher limits, to stake bigger. One million is nothing, you want three. And when you have them you want eight. If this goes without disadvantages there is nothing wrong about it, of course. But every jump in limits means a new additional risk. You beat 50-100 limits but the step to 100-200 on Fulltilt might just be too big for you and you just loose the money. Yes if you are serious you jump down again and still have a completely sufficient bankroll. But it still hurt your ego and you kind of wasted a lot of time and even more money. What can you gain on the other hand? You might win at 100-200 but then automatically you go to the next level, 250-500. It is an endless circle until you are either one of the very few absolute world class poker pros like Tom Dwan or lost a lot of energy for basically nothing. Chances aren’t big you are the next Durrrrr or Antonius. And even if it happens, is the life of Dwan so much better than the life of a “normal” guy who already earned enough money to never have to work again in his life? I doubt it.
And if the life of these guys isn’t seriously better, why not just staying in the “low” limits where everything is working fine and enjoying your life.