Gambling does exist in different forms before it actually becomes a business. People used to play gambling at individual levels however as the technology evolved, gambling become a proper business and thus it was promoted to the public as a means to get quick income without much effort however the reality is otherwise.
When internet was invented, online gambling was also introduced and now everyone can access gambling platforms on their laptops and phones.
I agree with most of what you are saying however there is a single point with which I would have to disagree. Calling gambling a business, or rather, a proper business is rather a long shot. It's always been half a scam due to its widely unregulated and unchecked nature. That has not really changed with today's technology. In fact, the internet may contributed to this wild side of gambling
Well the government acknowledge gambling as a business, so I don't think that we can argue with that. Just because many casinos are scamming people it isn't a proper business anymore? It does meet the requirements to be called a business, a commerce and an industry. Besides, to be able to operate a legitimate gambling casino needs a lot of documentation and certification to be approved by the government. Gambling had been a business a very long time ago. it might not be a proper business in the eye of the conservative, but technically it is a proper business acknowledge by the authority.