so i think that each of such a scene is just like small coplete game
It isn't. However, ask the legal guy, if you have one.
why is it against core VAM concept?
The concept of VaM, as I see it, is taking stuff people made and remixing it into something else. If you use paid stuff, of course you can't share the result, but you can still make changes for your own pleasure. With your licence protection plugin, as I understand it, that would not be possible.
You think that all paid scenes are against VAM concept?
I run a Patreon myself. Paid content is fine, although I would like to encourage more creators to go for an EarlyAccess approach, and Hub-host everything later. A single creator, even working full-time, is not able to make ALL the quality content needed for a scene. Clothing, Hair, Skin, Morphs, Environment, Assets, Audio, Plugins, Mocap/Animation, Lighting, etc.
Nobody has the time (and skill) to do
everything him/herself. If anyone pretends they can, they did not understand what quality means and where it comes from. If my plugins were paid instead of EarlyAccess, you could not share any scenes made with them, making the plugins more or less useless? Sure, you technically
can share a scene that references some paid VAR, but legally you can only reference the VAR, not actually included the paid content. It's super annoying to track down various dependencies needed for a scene. When its Hub-hosted you just press "Download All" and done instead.