Ock isn't used very often nowadays. Not since Osborn came back from the dead.
But if you only take the Venom lifespan he still has a better track record. JMS Ock
arc. That Spidey vs. Ock miniseries that came out around the movie. Been rockin'
hard over at Ultimate Spider-Man. And that's only in the span of approx. 3 years.
Venom has had two great appearances that I know of, ever: His 616 origin story
and his Ultimate origin story.
Now, a big part of this is of course that after Venom's original creation we got, like,
fifteen years of pure dreck in Spideyworld and Venom has a lot of potentional as a
character, but because of his 'naughty word-90s' baggage he hasn't really gotten the chance
to prove himself as anything other than a lame joke.
This is why they're trying to reboot the concept with a new host now.
But anyway, you can't really expect people drooling for a character in the movies that
hasn't been able to prove himself in the comics?