While 'OSRS' may have started as an adaptation of the game as it was back in 2007, it hasn't remained as such. Or maybe, 'OSRS' is an always refreshed game which keeps everything from the old 2007 time, while building it out with new updates, substance and occasions year-on-year
https://www.mmobc.com. Furthermore, is that this substance is special to 'OSRS', not showing up in 'RS3'.This implies players aren't just hopping into an old game, yet into a no nonsense MMO which keeps on presenting new encounters to its players.
The equivalent goes for 'WoW Classic' which, since its delivery in 2019, has additionally gotten various substance refreshes since dispatch
https://www.mmobc.com/wow-classic-boosting. Snowstorm have even clarified that they aren't against adding extensions to the Classic adaptation of the game, which means we may see a comparable event to that of RuneScape if the game keeps up its player tally.