That’s what I think, while he does get residuals from Seinfeld he’s pretty much been unable to do any work for almost 20 years. Julia Louis Dreyfus and Jason Alexander still were able to get plenty work all these years (they’ve both had their own shows - Jason’s were short lived) while also getting residuals. Same with the people from Friends - they lived good off residuals but still needed to work here and there.
JLD comes from money, so she doesn't have to, but she still has a semblance of demand.
I can't even think of the last time I saw Richards on TV besides Curb. Before that, I think it was just the infamous Letterman apology.
To this day I'll say "Staaahhhppp laffin, it's naaawwwttt funny" to the crew. Humourless twit, that Jerry.