even $#@!ing manchester city generates so much hype that people watch them regularly, and buy their jerseys even when the team has 1 single marketable player (aguero is sexy indeed).
above all, the league itself has to be fancy for an ordinary football fan. serie a with their old stadiums, racist and bigot figc president, general racism in the stadiums, slow-tempo tactical matches are not sexy at all. i love serie a with the imbecile, still funny presidents, the history of the league, the traditional rivalry with milan clubs, the smart tactical approach of some coaches, but i get it when my primera liga fan brother says that he'd rather watch bilbao-sevilla or west ham-swansea instead of genoa-lazio on a random sunday afternoon.