>>149009969
The main difference is that Venom has an amazing look. People want to use him and readers want to see him because he looks really cool.

Scorpion is just another boring green guy with stripes. There's a shitload of those that at least have something cooler going on with it. Dock Ock, Vulture, Sandman, Mysterio, Electro, Beetle, Norman, and Lizard are green too. Gargan is just the green evil bug guy.

Dock Ock has the evil genius angle
Norman is the evil trickster guy with wacky gadgets
Mysterio is the plotter schemer that is more inside your head
Sand Man and Electro are the dumb lugs who lucked up and got top tier superpowers
Lizard is the friend who cannot help what he does

Venom does a better job of being the evil bug guy while having a great look
Hobgoblin does a good job of being an evil scheme type who also has a good look to keep people interested