We all must take into account that the gambling business itself simply could not exist if there were not a constant and stable flow of money to the businessmen who organized it.
Sure anyone who opens a gambling business is assume to have a lot of money but it doesn't mean that they pay winning from their pocket all the time because I have been a witness to cases where a gambler wins a huge amount of money and his winning payments was postponed, if the company had that amount of money they should have paid him but probably because they want other gamblers to lose in order for them to pay the winning from the money of those that have lost.
No body opens a business to lose no matter how wealthy they are so even if a casino owner have huge amount of money, they can't spend it on people's winnings. Even those bookmakers who handle gambling activities know that a gamble owner doesn't pay from their own money, the money they get from losers is what they use to pay winnings so if winnings surpassed losers then they don't make payments immediately or they will delay in making payments.
And by the way, it is in this financial scheme that there is a huge risk of bankruptcy of the casino, when the influx of new money from losing players does not keep up with the payment of winnings. This risk is the most characteristic feature of this entire gambling industry. And only the largest and most reputable casinos, as I think, have a financial “airbag” and acceptable guarantees to avoid the collapse of their business. And all small casinos are balancing in this financial scheme and are at increased risk of bankruptcy.
Therefore, there is a maximum betting limit, because if the gambling platform does not have a maximum betting limit, then when a player wins a lot of money, then the bookie cannot pay it quickly. This is different from famous gambling platforms which have maximum betting limits,because they don't want this case to happen. Because, if they have a maximum betting limit then they will be able to serve gamblers well and not have problems such as late payments as you said. However, regarding the achievements that have been obtained from gambling, I sure that those who are consistent will certainly be able to achieve something good in gambling.
I would add to your words that almost all the players (who, of course, did not become gambling addicts at the stage of illness!) have achieved the main thing in their game. First of all, they received great pleasure from the excitement of the game and, naturally, the euphoria when they won. These are wonderful emotions, in my opinion, they are quite among the emotions that generally paint the life of any person in multi-colored shades, against the backdrop of the general gray everyday life of ordinary life. When a person only knows the work-home-family scheme and so on. I would even compare any player's gaming history to a great vacation in the Maldives. This is an unforgettable experience for a lifetime.