Could be in any context. I do it a little on UFC fights but that’s a relatively low amount and I can afford I to lose any time I do. It seems like it’s becoming a really wide spread problem though, at least in the US. At the same time I don’t see why it should be illegal. Granted I also don’t think any drug should be illegal.
There are, and I’ve played many fantasy sports in my life. But the vast majority is fantasy football, it’s like 80% of all fantasy leagues.
For most players, fantasy football payouts come from league members paying in every year. You’re correct, most of the enjoyment of fantasy sports comes from the competition and camaraderie with the prize money being a nice bonus. That’s one big reason I don’t see it the same as other forms of gambling.