[lupusreal]

In 2000, a 10 year old game was positively prehistoric, some unrecognizable thing only distantly related to the current forms.

In 2010, a 10 year old game was quite old, but a recognizable ancestor of new releases.

In 2020, a 10 year old game was kind of old. You could tell the difference if you had high end hardware and were tuned into certain details, but the new games were essentially the same kind of stuff as the 10 year old games.

The pace of advancement is slowing and game design has reached a mature plateau; games having greater potential to last longer each year. If a game can last more than a few months then there is a reasonably good chance it can survive for several years at least (presuming the publisher doesn't decide to cut it off to sell a new version, which is a popular tactic.)