That may have had more to do with Wilder and Knills experience in the game which previously was with clubs that didn't have the resources to scout internationally.
Football is brutal when it comes to management turnover, succeed quickly or out you go, so they went with what they knew and that would be mainly the British game.
There's also the fact that foreign players and managers have become fashionable, clubs with money will buy in foreign proven players rather than spend time developing their own. This means that there are a few good British and Irish players that slip through the net and we've been able to take advantage.
No doubt now we're up there we'll broaden our outlook.
That's my take on it, but of course I might be wrong, and it's because we is racist