IIRC Denuvo costs a fortune to keep in a game, since it’s a subscription model. Once sales sufficiently taper off there’s not much sense in paying for it anymore.
Some games have had it for an extremely long time. and some publishers never remove it (Eg. Sega). In some cases I guess they got a lifetime deal with an older version of Denuvo, but other cases are sus. I wonder is it for money laundering purposes.
Theres a list of every game that currently has denuvo here... https://www.reddit.com/r/CrackWatch/comments/p9ak4n/crack_wa...