Well never say never, nothing is impossible imo.   Also I would argue free speech and the right to defend the idea, etc.    I'll have to quote a source on this but government backed and guaranteed profit has very nearly been a thing.   But mostly you are correct, I specialise in merit virgins so I gave 1 :p

https://www.theatlantic.com/business/archive/2016/02/how-mit-students-gamed-the-lottery/470349/



Not sure if its game theory or just plain capitalism but always or guaranteed make a profit is a fallacy unfortunately.    I would still argue it can occur in unpopular, emerging markets, sectors for some time, maybe years.  That lotto thing went on for years apparently though they did make a loss in some instances; longer term it was against the odds to lose with their strategy amazingly, wish I knew