2 things...
1) As has been said, LeBron wasn't being ego-centric, he was pointing out how short a period of time 10 years was.
2) There are lots of issues with women playing in the NBA (like if they can do that then why can't men playin the WNBA) but the possibility is there. Hell, There's at least one who I think could probably do it now, and it's not Parker.
While watching my beloved Phoenix Mercury win thier second championship in 3 years it kept occuring to me that Diana Taurassi could probably be Eddie house. They are the same size, she's at least as good of a shooter as he is, she's a much better passer and ball handler then he is (though still not good enough to play the one)The fact that she couldn't defend anyone is offset by the fact that Eddie can't either. The problem is why would she want to be a role player off the bench in the NBA when she is the MVP of the WNBA. (not to mention a dominate player in the Russian league she plays in). Of course Taurassi has said that she believes A woman would not be able to handle the daily physicality of the NBA abn
If a Woman is going to play in the NBA it will be a guard, as has been said, we are a long way off from a 6-10 plus woman being able to physically compete with bigs in the NBA.