no they don't get extra money, fighters might have feats to customise what they do have but that's not extra stuff they get, they're still fundamentally miles behind in 'build points' to some other classes, fighter has like Combat:6/10, Exploration:1/10, Social 2/10 with feats serving as maybe 2 extra points to assign, but a wizard has like Combat:8/10, Exploration:9/10, Social 7/10 because they have a secret 'magic' stat that passively buffs all their capabilities in the areas they can pick up spells for.
there are classes who are behind who don't get extra money for gas.