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.
That's because nowadays, many technologies can make it easier for people to do their activities, including playing gambling, so they don't have to play gambling by visiting physical casinos and can play gambling wherever they want. The history of gambling has changed rapidly and maybe in the future, many people may leave the traditional ways as people have found ways that give them more comfort and can have fun, even in their rooms. A lot will happen in gambling, especially if the technology is more advanced than now.
Gambling was initially illegal in most places but now it is officially licensed in many countries. Now it is considered as an industry.
Yes, gambling has changed with the development of technology. Once a time people used to go to a casino to gamble physically now they can play at home. No one but the gambler himself can know the amount he has lost or won. In general, security is really high.