Training in Amrica to become an airline pilot will run around $100,000. Not cheap. But there is a huge shortage of flight instructors in America, so even if a person has that kind of money, they might not find a flight instructor anyway.
big commercial airlines do often pay six figures. A copilot down the street from me with southwest makes just barely over 100k which is OK. Didn't know regional were so bad. I had also heard the 100k training cost no idea how many pay that back.
Watch all of the YouTube videos by an airline pilot named Swayne Martin. He has videos of himself all the way from student pilot to airline pilot. In some of the videos he talks about how to deal with the high cost of inflight training. (Get your flight instructor certificate as soon as possible. Working as a flight instructor is the fastest way to build flight hours and make money at the same time,)
That's really cool that he documented his whole journey.
I always assumed the most common way to make it jet airliner pilot was to start in the air force, just to get the number of flight hours you need.