This is an incredibly long time and contributes to OSRS gold the lack of older players: they simply don't have time to play runescape and have a busy schedule in addition, while players of more mainstream MMOs have time. It's a grind due to a variety of reasons.
It is more likely that you continue playing a game if you've invested more time in it. You've invested too much time into this game to start with another. It is a common belief that content of high quality is better than low-quality content. High-quality content is admired and desired by the community.
High-level players often have access to content not designed to be played by players of higher levels. This causes lower-level players to become better or cease to enjoy the game. An excellent illustration is God Wars Dungeon: the four original bosses clearly aren't designed for 138s that can power through hundreds of kills but if you're not a 138, you don't have a chance: therefore the game is locked to an upper level.
Skillcapes provide a unique incentive to buy RuneScape Mobile gold get a skill to 99, since each 99 level now comes with an actual reward, even if there is no real content between a mid-to-high level and a maxed level. This means that even if the xp may be low the players will continue to strive to master the skill.