If we did that, they would cease to be "permanent" .
I understand your dilemma. I have maybe 6 perma-camos for my Bismarck. One of them is a camo that I "linked" to it. It's a bit of a bummer, but that's life. Now I have options.
You are under exactly zero obligation to purchase the Russian pack with permaflages in them. That choice is entirely yours!