In exchange, LeBron never gets injured.
He has a serious chance to become the youngest to reach 30k (he's done it with basically every milestone so far), but he'll have to keep his good level, and of course, his health. Things now start to get uphill for LeBron. Now, in his 10th year, he is averaging 25 points per game, while Kobe averaged 35, then on his 11th year averaged 32 and then 28... those are very unlikely numbers for LeBron, and Kobe did all of that without missing many games.
After that, Kobe turned 30 years old and, for now at least, he has the highest points per game in history for players since turning 30 (26.8).
LeBron took a wide margin on his early years since Kobe went through a few years playing little to nothing, and also had the 99 lockout (not even gonna get in the fact that he shared with Shaq). Also, he missed a lot of games in 2004 and 2005, which also didn't help.
Since his 10th year, Kobe has averaged 28.9 points per game, which is pretty impressive, considering the closest guy in NBA history is Michael Jordan with 26.5.