I've often considered this ideology when I played, because it might be true. If it is true, I couldn't come up with a reasonable method of fixing it though. Lowering the amount of gear one gets simply causes anyone looking for power upgrades (But aren't interested in doing significantly harder content) will often cap out after about a week, and then at least some of their motivation for engaging with the content (or even the game itself in some cases) is essentially gone. My personal skill level could, for the sake of argument, cap out at around heroic dungeons (queue content). Progression through that avenue is exceedingly fast, and I'm not sure slowing it down would be beneficial to the game as a whole, at this point.