Ideally betting like a pro requires a lifestyle change and when you take up gambling as a lifestyle you will experience significant financial changes.
What aspect of financial challenges are you expecting? Is it negative or positive growth because there is no guarantee with being a professional gambler. No doubt that you would also be making some profit but he will also be losing big because he will have to stake higher. I believe maybe streamers can have probably a steady outcome either they are in collaboration with the casino but to be a independent professional gambler doesn't have a guarantee of financial break through.
Gambling is an uncertain win-lose betting field.There is no guarantee that anyone will win a single bet. So it doesn't cross my mind whether this non-guaranteed gambling should ever be preferred as a major source of income. If there was a possibility of monthly or weekly profit from gambling then it could only be taken up as a profession or a job. But there is no guarantee that you can win from this gambler's bet every day. If you win one bet there is a chance of losing the next so this uncertain income should never be taken as a part time or full time job.
No guarantee at all, if there's someone who can manage it's a small percentage for sure, we won't see a lot of gambling businesses if gambler can take advantage of the services, instead, gambling owners are the one who really taking advantage of people who are involved with gambling, they are being allure of things that they misconceptions regarding to gambling.
It's a tough competition between your knowledge and emotional control, with that capabilities chances to earn is not by far but if you can't deal with it, better to treat gambling as a source of entertainment instead.