Fanatic here - I’m on a mission from God (within 
) and seriously think the world was going to be kind of archived in read-only mode if it had persisted beneath the twin delusions of the troll god monotheistic faiths, and a mass of disempowered materialists.
Exposition in more length:
Every spirit I work with tells me that, basically, although we have won, magick MUST be promoted and pushed to as many people as possible, and I not only believe that, I put in the work, helping people on here, in replies, in PM, e-mail, not to mention offline work with people studying various things, some of whom know I do black magick, others just learning a few little spells or things with crystals.
(I don’t get paid for this and I don’t accept payments, gifts, or donations, firstly because we’re doing very well, secondly it’s a tax headache to declare occasional small income, third it could interferere with my fanaticism and fourth, I hate the limelight with the kind of passion you only develop when you know the world of media and so on very well…)
And then I do group and individual workings to tear the old aeon down as well, and to push for a change in the relationship between mankind, and the divine… 
Fanaticism doesn’t tend to look at the small picture of the “me first” aspect, so I can’t answer for someone saner, but the same was also true of creating fire, and reading, and all kinds of skills - keeping them in a small group granted power, and yet eventually, that system ended (or was ripped open) and people would ascend in power as a result.
Look at the unprecendented mass literacy we see in 2018, nothing like this has existed in recorded history. It seems to me that to take that away and get it back under lock and key to a small elite would be a criminal act on a massive scale.
On the other hand, when knowledge got lost, it was a loss for all of us, including future generations of our own bloodlines and future incarnations of ourselves, so on the evidence, an open culture (with of course everyone choosing to keep SOME works to themselves) seems like the best way ahead.