The tipsters are not professional gamblers if you ask me. They are trying to make a steady income flow from the tipster work they are doing in order divide the risk element of gambling.

If I knew that I would be getting X amount of money for sure and I can gamble with the rest I would have become someone known in betting world as well. Also betting is not the only way of gambling. You can't be "professional dice player", its pure luck, maybe poker but those people out grow bitcoin space and go into stuff like pokerstars.