Some Modern Examples:
Concord lasted two weeks.
Babylon’s Fall didn’t make it a year.
The First Descendant lost 97% of its players.,
skate. is fading fast, and its Steam reviews only recently clawed their way out of “Mixed",
Skull and Bones has probably shut down
KTLJ is a trainwreck, same with Gotham Knights
Even Marvel Rivals, the most “successful” newcomer, has dropped 90% of its audience since launch.
Marathon looks to be a failure
The “forever game” era also gave us LawBreakers, Battleborn, Anthem, and others that didn’t even make it past 1 or 2 years
Games built to be “forever experiences” are dying faster than the single-player titles they were supposed to replace, If live-service gaming was ever sustainable, we’d have more than a handful of survivors left.
Meanwhile Sea of Thieves has been getting updates for 7 years even though its a buggy mess where almost no game mechanic consistently works.
Even the examples of live service successes usually have major problems if you look deeper at their update history at all