[wallio]

There is a tradeoff between being selective and inclusive. If you are too inclusive (i.e. almost everyone fits) then you can't be very selective. On the other hand if you are very selective you must be definition not be very inclusive.

From what I know Valve is very selective. It seems that both Ellsworth and Valve thought it would be a good fit but for whatever reason it turned out it wasn't. While they lost out of her many talents they preserved their culture which has been very successful so far.