Many people can profit from gambling but in my opinion it should not be considered as a main source of income because it is a place where you may earn a lot today and it may be gone tomorrow.
So it is better to take gambling as a means of extra income without taking it professionally because you can become rich with the extra income you get from it but gambling is a dangerous platform so be careful for gambling site.
In my opinion, it shouldn’t be considered a source of income at all cause it literally isn’t. Anything considered a source where you earn money should at the very least, be reliable. Money won from gambling isn’t reliable as it doesn’t come often. It doesn’t come when you want or need it so I don’t see gambling as a source where one could earn money.
If one is looking to earn some extra money, that person should get a side job where the paycheck would actually be steady and reliable. It’s better to look to gambling as an activity rather than a job. The win is more enjoyable then.