I;m interested, since bitcoin isn't that much widespread yet, how are businesses (that are directed towards bitcoin only) doing? Is it paying off or is there some serious profit involved?

I didn't understand well what you said. But a bitcoin success business are the casinos. Some of them are allowing only bitcoins and they are making nice profit letting players gamble anonymously, good for who lives in countries where gambling is forbidden.
But to make a business be successful you need to be a professional, need to be dedicated to your site, service, only this way you will achieve your goal.