Reasons for not moving up...

[WhoIam]

I think a lot of it is mental laziness by people who just aren't that ambitious. They feel that if they can win consistently at a certain level by half paying attention, there's no need to deal with the stress of moving up and having to think a lot more and risk making mistakes. It's like if someone had a relatively easy job with a decent salary and was offered a promotion where they would have to work a lot harder at their new position.