There are legit groups but I they're be overshadowed by the fake ones.
When it comes to soccer as regards to such legit groups, they hardly give out three correct winning games constant and daily. So most times they can share one winning game and it is not out daily. Therefore, rate of there winning is not constant and not anywhere near 85%. Moreover, giving out just one game is not enough because majority of bettors are those who don't have huge pocket to take big financial risk to stake on just 1.30 odd (on A level teams like Madrid, Barcelona or PSG, Manchester city) for example because some of those "sure" games that those groups share out are already predicted winning games around the betting space, so a bettor need at least reasonable winning games like 3 different games to play for a reasonable potential winning. So you see it will become a thing of running around the circle
So In conclusion, I think you're trying to say that, there aren't any real bet groups around,?
Well maybe to you but I'm certain that, there are guys out there who actually take out their time to make predictions and they always come out with great results and winnings.
I also understand that these legit groups are barely possible to find but the truth is that they exist and there are surely people who are benefitting from it.
Please don't also get me wrong and think maybe im.just countering your motion, but what i'm doing is that, I'm only trying to point out a point to you and make you share in my view.