Musicians don't make any money, bud. 99% of professional musicians (and I mean professional level, touring, performing acts, not just session players or random kids jerking off in the garage) are not anywhere near the millionaire mark.
You hear about million dollar contracts and all this shit but those are just loans--bands are businesses selling music/live performances and record labels are investors who want to see a positive return on their investment.
And being that 95% of commercial music releases actually LOSE money, the bands don't stand to make a whole lot in the first place. Even the successful ones still have to pay for all the production/recording fees, hire a road crew, buy equipment, pay for transportation and food for all their gear and personnel, pay the venue a big cut, pay their management a big cut, pay for any lights or background images or other visual decorations, and still gross enough to pay back all LOANS they got from the record company, with interest.
Even "big names" that most people know are rarely making that kind of outrageous money, after all expenses are considered. Don't let gross intake figures or big record sales fool you.
Look up an article called "The Problem With Music" by Steve Albini. You can sell 250,000 records on a major label and still end up making less per hour than you would have working at McDonald's.
btw, Rush is still one of the highest grossing acts every year they tour. It's because they've spent a long time building a solid and widespread market. And here I thought good musicians weren't allowed to be popular!