Hmm, I did some quick googles. Wiki didn’t have much on his finances, just his work. But from few sites, it seems he definitely was blacklisted but made a return throughout the 70s and 80s but nothing big took off and he still ended up broke doing commercials because he lived too loud with his money. So it seems it started with being blacklisted but he also was spending too much money? I dunno. I’d have to read more, but sounds about right from what I remember of a film appreciation course I took a decade ago that started with fkn citizen cane.