(and probably doesn't pay crazy money the way villain roles for middle-aged and older male actors sometimes have).
I am not an industry insider by any means, but I would expect joining an established franchise like SW or MCU is a little bit about betting on long term income instead of a big up front payout. Even if you're not the star, there are opportunities for sequel options, voice overs, video games, residuals, conventions, etc.
I'm not saying it's a one way ticket to riches, of course. But outside of the huge stars, a lot of Hollywood is very feast-or-famine for income. A Star Wars role could be a ticket to breaking that cycle.