Don't most actors just end up playing themselves after a certain amount of time? DeNiro and Pacino have been doing this for years
To an extent, yeah, I think those two especially just got lazy or impatient waiting for decent roles. DeNiro was sort of against typecast in the Focker films, but they're mostly fluff, right. Pacino hasn't done anything noteworthy since Insomnia in 2002, which sucks.
But you still got the Nicholsons (retired now), who did As Good as it Gets and About Schmidt - both very unJack - toward the very end of his career, but he was always prettty selective with scripts. And DD Lewis is incredibly diverse, but still fairly young. Hope he keeps challenging himself with the meatier stuff.
Then there's Gary f'n Oldman, goddammit. Still among the best, but he's now settling into these bullshit Commissioner Gordon paydays when he's got plenty left in the tank. Write the fucker a juicy role for Christ's sake! Did get a glimpse of old Gary in Lawless, but the part wasn't nearly big enough.