Probably because it was dormant for a long time. And then when it was brought back, it was brought back by people who have no clue what made Star Trek good so it has largely sucked.

> Star Trek really doesn't seem to be as big as it used to be.

Hint: it was never big outside of the USA. If anything, Internet and the Hollywood reboots is the way most people outside of the USA learnt about it.

Also try to find Europe in the article: https://en.wikipedia.org/wiki/Cultural_influence_of_Star_Tre...