Didn't The Hulk go into syndication? So wouldn't he get paid off of that? One could have a modest living, and he could push his fat kid into being a weight trainer...
Nobody wants to see Lou at Comic Con, they want to see Ian Welling, Kristina Kruek, or the dude who plays Lex, Lionel, Green Arrow, or Sam and Dean Winchester. Or Spock, or Scotty, or Capt. Jean Luc Picard, or Capt Kirk.