I'm sure they are in groups and the same people, even why it continues to run rampant because there are probably lots of victims every day so there are lots of phishing sites that they create everywhere and they spread it by spam, it really looks bad but still always remind anyone to stay away from it. whatever the phishing site and always follow the official social media to see whether the giveaway is genuine or not, if it is not from the official site or official social media, it is definitely a scam.
True, they must be in groups and I'm sure there are quite a lot of them, they divide and have their own tasks. Of course, I think the factor of people's lack of knowledge will very likely give them to act further, they have tried it and proven that the victims are getting more and more, so they draw the conclusion that most people in an area are still very taboo with cyber crimes like this phishing. So the point is we must be more vigilant, don't be easily tempted by anything you find on the internet, especially social media like the case of the giveaway scam you conveyed, we must be more detailed in making sure whether it is true or a scam.