Like all of us, career choices are not only dependent on who the employer is. We have to be happy with where we live, our family has to be happy, and moving, in itself, is a big deal, away from schools, family, friends, and so on. Moving countries and we then throw in the weather, culture, and language into the mix; it is a very big deal for many people and certainly not only about sporting success.That's a biased and arrogant view.
As a team, a vast majority of players would love to play in this team, but some of those may not want to live in the UK, Manchester etc, not everyone thinks English culture/lifestyle is a dream.