>>724521970
1) Microtransactions
2) A long history of pushing unpopular updates that fundamentally changed the game and alienated its audience, such as microtransactions
3) 25 years of content bloat and drift, power creep, inflation, and a general lack of foresight, long-term planning or concern for the health of the game
Old School was created in response to RuneScape hemorrhaging players following the deeply unpopular "Evolution of Combat" update and shortly ahead of the launch of "RuneScape 3," both of which changed the game so drastically that it became almost unrecognizable. While it initially stagnated with a small but devoted playerbase and a skeleton crew of devs with very few resources to develop the game, once the Grand Exchange was added it immediately matched RS3's playercount and never looked back.
The simplest explanation for why OSRS is more successful is that its developers and playerbase has learned from RS3's mistakes. All content updates must pass a poll with a 70% majority to be implemented. The overall philosophy has been about improving the existing game and expanding on it, rather than building it higher or trying to replace it altogether.
>>724523394
Would you rather click a mob, let your character fight it for 10 seconds and then click the next mob, or would you prefer to click a mob and have to manage a full rotation bar of abilities to do the same amount of damage you were doing before, and keep doing that for 1000 hours of grinding? Because that's what Evolution of Combat did.