Define success. Getting a worldwide following through TV viewing is one measure, but losing the connection to the fanbase is another. Yes, the games are full when that is allowed, but who is going? Someone said that the average age on the Stretford End is 49, whereas it was 17 in 1968.
A 17 year old couldn't afford to go now. Long term, is that a good thing?
Success for me is building a connection to the fans. The Premier League has gone out of its way to break that connection through subscription TV, outrageous season ticket prices and development of a 'brand' that appeals to people who won't even come to the country, never mind the ground of 'their' team. When you see Premier League teams arriving at the ground in their designer headphones designed to avoid any chance of interacting with the fans, earning more in a week than I will in a lifetime, then how can I relate to those players?
Now, financially that may well be deemed a massive success, but that's not why I go to football. The key word for me is 'go'