The Jesus wrote...
The profitability of the porn industry has taken a hit because of the internet. On top of that, some states have passed laws requiring men to wear condoms in porn. While the industry adapts to all the bullshit that's been thrown at it, keep an eye out for companies that put out a good product, but aren't making a whole lot of money. Another thing to consider is the pace at which the porn industry has evolved over the past 10 years. The world is filled with perverts and technology is constantly evolving, so it might not be completely insane to invest in a few "potential" sex toys.
You can't go wrong with cigarettes and liquor. Prices are constantly rising, but they're both addictive substances. People will spend a lot of money to get what the need. There is no downside to investing money in companies that cater to the addictions of the masses, aside from morals.
There are simply too many assumptions or i would say nothing but assumptions about these 'great' investment opportunities. In the porn industry companies rise and die every year and these 'potential' sex toys you talk about show the exact nature of the investment business. Maybe, and i mean maybe 1 out of 20 if even that of the sex toys ever become profitable (like fleshlight), and your "secret investment advice" is simply to invest future sex toys, so what im saying is that 1 out of 20 who follow your advice would make money and the rest would loose their investment.
The thing about cigarettes and liquor is that the reason prices are rising is not because the industry creates better products, it is because governments tax them more. There for the profit companies make is not increasing, only the amount of money the government makes is increasing. Not only that, but also the fact that cigarettes are being pushed down in almost every country in the world (specially in EU) by bans in ads, and places to smoke, so on and so forth, doesnt help your claim of "There is no downside to investing money in companies that cater to the addictions of the masses."
No such thing as 100% sure investment exist or without some type of risk. There is always the chance of loosing your money!