> But we all know that's not why they're being sold.
This line of suspicious thinking doesn't make sense to me. Options can be used as a speculative instrument, or for one of a number of other purposes (yield enhancement, insurance, volatility hedging, stock replacement, arbitrage, commodity market access, even multi-year investment), but the thing that makes options trading dissimilar from gambling is the simple fact that you are not playing a game of pure chance. There is a large element of uncertainty in the public markets but they are driven by information, and that is why some participants are able to make money.
If people want to blind themselves to information, then sure, you can call it a game of chance. But if I'm analyzing vol and backing out information implied by pricing in order to take directional views around underpriced catalysts for assets that only a handful of people really have the skills to evaluate in that way, am I gambling or am I speculating?
Some may say "all speculation is gambling" but I see a difference between those two activities. It would also be risky to rent drilling equipment and prospect for oil, but there is a science and method to wildcatting and few people would refer to it as gambling in the sense of playing slots or roulette.
Personally I also believe that people who play card games based on probabilistic reasoning are doing more than just gambling. In a sense, that's what casinos do. It's business at the very least, a form of work that in casinos provides a profit opportunity from entertainment and in the public markets provides a profit opportunity from contributing to the information efficiency of financial instruments.