this also explains y they tend to fall so easily, even there is 70% chance they can score the goal but opt for a dive in stead.

I'm not going to speculate but I do believe corruption is prevalent in most places, it is only a matter of to what degree. In the past players like Hans Segers, Bruce Grobbelar and John Fashanu have come under investigation but it's probably less common these days amongst Premiership players, given how much they earn these days. Perhaps match officials are now the more 'economical' targets and it could explain why there have been so many bad decisions of late. Again, this is pure speculation but food for thought nonetheless.