Tell your brother that he can have the exact same easy street life you have. All he has to do is pony up $60,000, lose 10 years of his life pursuing that major airline gig (without the guarantee of achieving it), spend over half the month away from his family while working towards that goal, and live on poverty scale wages while all of his friends are making good money and buying houses, cars, etc.
Then tell him to stop being such a lazy POS himself. If he got up off his a$$ and jumped through all the hoops you did, he could be CEO of the Sofa too!
Exactly, it is a major sacrifice(lifestyle and monetarily) with no assurance you'll ever get the dream. Even if you do get it, it probably won't last your entire career and then the dream just became a nightmare.