About a year ago, I did a search on Collins' knife related patents. He holds quite a few, a couple dozen IIRC. His design influence can be seen on companies like Gerber, Ontario, Case, Camillus, and probably a dozen others.
One thing I did come away with is that he's the type of person who throws every idea up against the wall in the hopes that at least one might stick. In that sense, he's very successful. On the other hand, my take on his patents, is that his ideas tend to be gimmicky and not particularly revolutionary. He occasionally made claims that might seem contentious to lots of knife nuts here, such as inventing assisted opening before it was known as Assisted Opening™. Another measure of his success is that he's pretty good at marketing his personality. His name seems to have kept the likes of Meyerco/Camp USA alive. Even though the wares bearing his name with those brand stamps end up as poorly thought out end products which look better on paper than in person.
One difference I perceive, which may be completely wrong, is that Collins seems not to have been a highly regarded knife maker so much as designer. If this is true, it stands in contrast to the likes of Ken Onion. Perhaps this is why the products bearing his name seem to come up short in final form. Perhaps he's largely disconnected from manufacturing processes, not only in his current associations, because he's never been all that versed in the nitty gritty of making stuff in the first place?
Whatever may be the case, he seems successful at keeping his name out there. More power to him. I should be so lucky.