They do but, well it depends. You need to find the right product at the right time balanced by multidimensional inputs (time, competition, having right connecti

They do but, well it depends. You need to find the right product at the right time balanced by multidimensional inputs (time, competition, having right connections, luck because you need conditions to be similar when you are ready to ship, and the fad needs to last long enough to make it worth your while etc. etc.) - so the hard part is finding "the" product. It is a lottery ticket. If it works out great, more often than not it will fail. There is a specific time window for a given product and it is not at all clear where in the timeline you are at so you need to guess. Whatever you are attempting WILL eventually fizzle (people will lose interest, most people that are interested will get one, the competition will get insane and will eat your margins) - the question is when. If it is sooner than you thought, you will lose a lot of money. If it is later than you thought, you will make a lot of money.