I support some form of FOSS guilds, in moderation; that is, there is knowledge that is documented but not necessarily full, complete tutorial and discussion casually provided. Obviously many companies do this explicitly themselves now with "community documentation" or "public core" and then many other media assets that are not shared widely. This is natural and obvious, with caveats that fairness is inherently difficult, and you can't please everyone. Security practice is certainly the sort of world where that guild behavior can go badly, and many will complain, sometimes falsely. So it goes in the real world.
Corporate and government users have been free-riding FOSS to ridiculous levels, in my view, and I welcome some way that actual practitioners can self-organize and at least survive. As opposed to say, divorce, substance abuse and what amounts to financial suicide, which I have seen happen to real people with good intentions and bright minds.