There "fan" base did build after the Munich disaster as it was received world wide, this new fangled thing called television. Best, Law et al helped build it stronger in the 60's and, as you say, the creation of Premiership and Sky tv they grew even bigger, the fact that they have dominated premiership and cups helps. I remember in 70's when Liverpool were "the" team to be following, so many european cup wins. But a true fan stays loyal to his/her childhood team through thick and thin. 35 years and we're still here. MCFC