That's just two businesses I got talked out of, there were dozens more. I also came up with an idea for the most formidable bear deterrent in the world, and I'm not talking about CS bear spray. The problem with CS bear spray is it is a direct fire weapon. If you have to use it, you're already engaged with a bear at close quarters. CS bear spray doesn't deter bears from entering your camp in the middle of the night, does it ? Nor does it deter a bear from quietly sneaking up on you while you are fishing on a river bank somewhere. (And let me tell you, an 800 lb. bear can creep right up on you. In most cases, the first indication there is a predatory bear nearby, is when you feel his breath on your neck). Then there is the other problem, "What if there is more than one bear" ? The solution. Even the biggest, baddest Kodiak, or mamma Grizzly bear isn't going to mix it up with a skunk, and every bear by the time it's two years old knows what a skunk smells like and to avoid them at all costs. Why not synthesize skunk spray in a can ? Walk out 10 yards, or so from your camp site, and give the spray can a miniscule squirt on a bush, and sleep safely. A bears sense of smell is 50,000 times that of a human. So you wouldn't have to use so much you would be able to smell the offending odor. Walk fifteen yards around the camp in a circle, and lay down some more "Fresh" skunk. Continue until you are surrounded by an invisible and impenetrable "skunk" barrier.
Of course it could be used as a direct fire weapon as well, if designed with a narrow stream, instead of a fog spray like a conventional bear spray. That's another downside to CS bear spray, the wind can blow it back on you, and you become as disabled as the bear is. CS bear spray then becomes a waiting game. Who will recover first ? You, or the bear ? Notice I keep using the phrase "predatory" bear, which is a bear that has decided to kill, or eat you. The runoff the mill, curious bear is easily deterred by CS bear spray. In fact, the average bear won't usually even enter a camp site with a strong human scent. If you leave your camp empty for more than three days, all bets are off. Better not try spraying CS bear spray through a hole in your tent either (say one made by a predatory bears claws). A straight stream skunk spray could easily be fired through the smallest hole, and the bear won't come back later on. he just learned you've got a skunk with you in your tent.
Imagine the advantage of not having to haul your packaged food up into a tree and haul it back down every time you cook. Sleep soundly all night in complete confidence. Never having to worry the pet dog is going to be killed by a bear (and BTW I've seen the biggest, baddest pit bulls on earth, roll over on their backs and whimper like a puppy at the approach of an 800 lb. brown bear). Your dog isn't suicidal, he isn't going to fight to the death against an gigantic monstrous predator like a brown bear. he probably wouldn't attack a 300 lb. black bear either, and the common and numerous black bear accounts for 95 % of all bear attacks on humans.
Name of the product "Bear-B-Gone" Skunk spray and bear deterrent. Naturally, you could tame your own wild skunk from a kit and throw it at the attacking bear. That might work also, but I think it would be less reliable than "Bear-B-Gone". One thing I always carry with me in bear country is a small economy size spray can of WD-40. It contains ether, and makes for one heck of a improvised blow torch with a bic lighter held in front the nozzle. Keep it down to a three second bursts, the nozzle will melt, and the can will explode with prolonged use as a flame thrower.
I've actually used WD-40 to stop a charging black bear in his tracks. The bear was digging in a garbage pile, and I walked carelessly past, as 300 lb. Boo Boo bear (as he was called by the locals) was well known and seemingly acclimated to people.. except if you got within 20 yards of his garbage pile. The bear covered the 20 yards in a couple of seconds and headed right at me with his ears back and his teeth showing. This was no "mock" charge ! I pulled out my can of WD-40 and the lighter, and gave Boo Boo bear a blast of fire just as he was swiping at my legs. Bears are covered with fur and they scorch easily. No real damage, just some burnt fur. Faster than you could say "God Yes" Boo Boo bear made a 180 degree flip in the air and reversed direction in a panicked run. He continued to bellow in indignation as he ran a couple of miles away abandoning the garbage pile for the day. A few weeks later, in the middle of the night, Boo Boo bear retaliated in a surprise attack and almost clawed his way into my tent. Fortunately the first gash was large enough, I was able to give him a second treatment with the WD-40 without catching the tent on fire, although the hole became a whole lot bigger, and my tent was ruined. Skunk spray eventually wears off, serious fire damage to a plastic tent does not.
Anyway, good luck making a million dollars Kevin if you decide to market "Bear-B-Gone". I'm near the end of my life, never married, and all my family are gone, so I don't need the money so much, as long as I have a roof over my head and I can make groceries.. I'm happy.