And as KingDaniel said, those Trek tie-ins were being purchased by an infinitesimally tiny percentage of people, of which almost all were probably already Star Trek fans to begin with, and not people who had no idea what Star Trek was and decided to buy a comic book to find out.
Again, companies do not invest in licensed products with no expectation of profit, or if it is understood that the audience for that level of license is small. That is the reason we do not see innumerable items based on Love American Style or Alf, decades after they aired their respective series finale.
Believe whatever the hell you want, but the truth is that the time between the cancellation of ENT to the production of Star Trek '09, Trek was deader than dirt and had been steadily declining in popularity ever since TNG went off the air.
Reiterating, the only part of the franchise that died was anything tied to the Rick Berman pile of series. After hundreds of episodes produced between TNG-ENT, when it all crashed, it was judged as being something removed from TOS tv/movies--not a part of it.
The sideline beauty of it all was that Berman and his crew spent so much time trying to escape the cultural impact / creative influence of TOS, that when his ST crashed, it did not drag TOS into the soldering Berman rubble.