Caffeine doesn’t hit the same way nicotine does, but then both are inferior to dexamphet/methylphenidate/modafinil/etc.
I wouldn’t stake my fortune on trying to get something like this off the ground, especially when most convenience stores (barely) sell caffeinated gum.
I would try adding some L-theanine to your caffeine though, 2:1 theanine to caff.
That delivers some of the best bang for buck boost without sucking on pouches or abusing pharmaceuticals, but even then, being non habit forming sometimes I won’t bother rebuying.
Hope I haven’t spoiled anything, best of luck on your product development journey.