It is written in your our own post and I've said it twice, but I'll quote your own original post.
Bally Technology - Articles & Methods to facilitate the delivery of Playing Cards. Patent # 11480345
It's not casino tech, it's manufacturing tech.
Have you even read what are the principles of the company itself? What drives it? It's certainly not the casinos cheating you.
I have thousands of playing cards, not because of my
gambling nature, but because I'm an amateur magician. Do you have any idea how much creating a card like this would lower the costs for everyone that uses cards? The only thing cheap on a normal deck is a normal deck. If you ruin one card, you need another deck. What if it could be different? What if, if I ruined one card, I could have just that card? What if casinos could dispose ruined cards, not for entire decks, but for those cards only? What if the casinos have the systems to change the card? That won't be at the table because there's so much money with so little risk that actually using it for cheating sounds doubtful.
Think about it. What would casinos have to win for doing this themselves? And what would a manufacturing company win? What would all business that depends on playing cards win? What if this patent is to be used on other business ventures as stated in your own post:
In some embodiments, the playing card media takes the form of an active media, for example a form of electronic or "e-paper", smart paper, and/or ink code, which allows the formation and erasure of markings via electrical, magnetic, or electromagnetic radiation.
Can't you see there is much more to win here than cheating players? The same players that would be walk and never return to the casinos that would actually be found to do this?
You tell me that you'd like to hear what other thing can it be. But you have posted it yourself in your opening post and you cut a card and looked at it for 3 years and I read your post and googled Bally Technologies in 5 minutes.
The problem is that believe it or not, you have not proved a thing.