Why do you think that?
You assume, that PvP characters cannot also have skilled into industry for their isk generation. Industry and PvP are not mutually exclusive things.
With CCP changing their game to focus around structures and keeping those as lucrative “objectives” to be fought over, it looks like it would be even more common than ever to see characters both skilled in PvP and industry. You need PvP skills to defend the structures, while you need industry skills to make use of the structures.
Anyway, this threads point of “Oh, if carebears leave there will be no one left to inject the game with assets, ergo they can only be injected with IRL money lootboxes” seems, in my opinion, rather far-fetched.