IMO it depends how you define players, or at least up to which 'level' so to speak
* There are guys who are great players, but they don't play for whatever reasons
* There are guys who are rather poor players, but they are very successful because they go out and meet tons of women
* There are guys who are 'naturally' good with women, simply by having great experience with different women. They are not real players, they have no PUA experience but they get laid a lot
I have no data to support my claim, but I would estimate, just roughly:
* Group A: I would say that about 30-40% of guys don't have any clue as to what women want and how to behave around women for whatever reason, e.g. they are not interested or would never touch dating
* Group B: Another 30-40% of guys have some minimal to average knowledge. They learn something, they go out and date couple girls, they end up in LTR or married
... so that's together about 70-80% of guys with no-knowledge to average knowledge (if we can look at it that way) in Group A and Group B
* Group C: Another 10% have some above-average knowledge. They read and learn, they experience, they become good but they don't take seduction as full time, they simply focus on other things
* Group D: About 10% guys are pretty good with women, whether they are players, naturals, PUA or whatever else. They probably focus on seduction most of their time, they become obsessed with seduction
* Group E: Top of the top. Probably 1-3 % of all guys
* I don't believe in 'secret society'. All 'secrets' are readily available online on different sites, it only depends on particular guy how much effort is he willing to put into learning. I also don't believe that a guy has to be in Group D or Group E. Group C is plenty in order to become really good with women. All it takes is some skills and simple interaction with women WITH the intention to have sex. There are many women out there who want to have sex, all we as guys have to do is to 'enable' it in stead of sabotaging it...
Also note that there are many factors that contribute to 'being good with women'. For example, tall athletic guy who is outgoing and friendly doesn't need that many skills as girls simply approach him as he is naturally attractive - compare to shorter, fatter introvert who doesn't have many friends and all he does is computer game. He will just have hard time with women no matter what knowledge he has.
As far as cheating, girls don't cheat with players only. It could be anyone, your neighbor, your friend, a guy she knows for years, a guy from her job... There are also different kinds of cheating, guys for example care about physical cheating only, but girls do care about emotional cheating as well. As a matter of fact, about 2/3 of married women are seeking some form of affair. There are many reasons, the simplest one is that they get bored after a while. In 1/3 of marriages one or both partners admit to cheating.