I was in London last weekend and couldn't get tickets to the match, so did the stadium tour with my daughter. And all the staff I spoke too said they themselves could not get ticket. one guy in front of me had tickets and wrongly gave them the match ticket (tour was on Friday) and they all laughed and said they'd take them. Couple of staff I spoke too said they had not been able to go to any PL games, only Emirates cup and one League cup or something.
But the queuing system is clearly not very effective, and the lack of transparency does give the impression it's corrupt. Seems to me a lottery system within red/silver members would be the easiest, and if you get some tickets then you can't get any for a number of games or something like that. It's the first time in years I could not get Red tickets.