the short answer is 'YES'. in any multi-billion dollar market, lots of people make oodles of cash, but many, many more people do not.
i take it you would like to know how. there are actually several time-tested business models that are quite profitable when properly applied. probably the cheapest, easiest, most reliable methods revolve around 'Affiliate Marketing'.
i have been reasearching this for some months now, and i fully expect to sell something someday.