If you truly want to protect tennogen creators. Refund the platinum to the consoles that bought tennogen if they migrate to PC. Platinum is just digital currency you can make with 1's and 0's out of thin air.
If they want tennogen, they can buy it through steam.
Even if you paid the creators a lump sum for the skin on console, it's still a fair loss on DE since the company could not predict the game would become cross platform.