Social activity in this era already changed. People don't need to meet offline but they can use an online app to discuss something. That is happen too in gambling industry where we see many online casinos available and have so many gambling games. That make us gamble alone without anyone beside us but we still have fun.
That is not strange because the situation is not the same. I prefer gambling alone without anyone around me because I want to have me time in gambling. But I don't mind gamble with others if I want to have fun with them.
We can still see some people visit offline casinos but they also like to playing gambling in an online casinos. So that make them have more choices where they want to spend their time.