If you can be a professional dota player, then it is a good choice. You will be paid heftily just by playing your favorite game. So if ever you want to replace gambling with dota, be sure you are a serious player and make it your goal to be a professional player. In that way, even if you are addicted to it, you are earning a lot too.
Well playing games like these maybe will be a great substitution for you addiction in gambling! but getting addicted into something is really bad but being a professional in it and doing it for your country maybe it's half bad well there is now a tournament or these kind of games right now are getting popular and being value in different parts of the country.