Pro´s are concerned about making money, amateurs are concerned about their gear ...
I think this somewhat inaccurate. Everyone is concerned about their gear. Pros just exercise more restraint in the gear they decide to buy to keep expenses under control.
In my mind, not only does 'pro' mean that one makes money and/or a living with their photography, it also means they have a more mature and bottom-line + result driven attitude about their work. A pro makes images first and money second when they are lucky and otherwise just has to make money. However, in every case, regardless of the fun factor, the money is the result of the image not the other way around. And the pro makes sacrifices to his enjoyment and fulfillment to pay the bills. It's not all fun and art. Sometimes it's boring crap that pays.
Being a pro also means they do whatever it takes to get the shot and they don't give up until they do regardless of discomfort, effort or sacrifice. A pro adheres to a high standard and goes the extra mile to achieve that standard because if they don't, their reputation will suffer and a pro's reputation is everything. Without a good reputation, they will eventually be an amateur because no one will hire (pay) them for their poor low quality (lazy) work.
I look at some of the work of famous pros (McNally, Sartore, Adams, Salgado, et al.) and that it's evident that they make/made big sacrifices to achieve amazing images that most others miss. They travel farther, get up earlier and stay longer. They emerge from the field dirty, battered, bruised or just plain dead tired. It's easy to click the shutter. It's hard to wait 6, 12, 24, 48 hours to click the shutter and still miss the shot because the light wasn't right or whatever and have to wait more.