you'd be more likely to lose. Gambling usually favors the house.
No it dosent ,
what do you think sports gambling is ?
Investing or trading is much safer, but also not guaranteed profit. But at least it's not a guaranteed loss.
what stops you from losing all of your trading investment ? nothing is absolute ...even your boss can fire you anytime ? more or less.
It is the loss of the money in the favor of the owner of the business which organize the betting (whatever kind of business it will be; online or offline).