Both carries quite the risk and people need to be aware of this. People often think that if they've traded a few altcoins and some Bitcoin that they're traders, but they aren't.
Yeah I know it that gambling is not a better to earn bitcoin but still so many people is being attracted to do the gambling and some of them think that this is the fastest way to get your bitcoin altough the risk is high but they still do it. Of course doing it both get a higher risk and it is not a guarantee, but some of them really get money from doing trading and of course they have a big stash of bitcoin so it will be easier for them to get some.
Some of them think like that because they already earn a little bit, altough they are just in lucky and didnt have any basic though