this is the reality now thou, clubs with more money will sign the best players, sometimes those that have come thru the youth system, like Willey and James Taylor.
The clubs left simply don't have the finances to hang onto players once they play for England.They are the same clubs without International fixtures.
I expect in the future County cricket will have a radical change as it's not financially viable for a large proportion of clubs, but what that change will be is anyone's guess.
I don't think myself it's impossible to see clubs merging to create a smaller Championship.