Ok, you're right. I'm sorry, that was completely pointless. In all seriousness, what is probably most telling about the time period in computing and why there is still such a following today is in the second sentence of its wikipedia page; "Listed in the Guinness Book of World Records as the highest-selling single computer model of all time, independent estimates place the actual number sold between 10 and 17 million units."
While its true that shortly after that era the "IBM PC revolution" effectively fragmented individual model counts so far that counting sales based on single model figures became a pointlessly obscure metric to gauge the total picture of the market, it also remains true that at that point the highest-end IBM models could only do 4 screen colors simultaneously (compared to the Commodore's 16) and 1 sound at a time (compared to the Commodore's 3) even for years after the practical extinction of the C64 from a sales perspective, and that there is still to date no single other model of personal computer that ever achieved such market penetration, and most likely there also never will be again.