Back in the USSR, something as simple as waxed paper was unavailable. The explanation I got was that it was possible to make them into primitive printing plates with a typewriter. Not sure how true the explanation is, but it fit well with the paranoid attitude of the Soviet government. The point is that I had no idea waxed paper existed until after I left the USSR for a more free world.
The process is repeating in the United States. Every year, something becomes illegal or plain unavailable. Last year, it was laser kits over 5mW. Previously, chemistry learning sets lost many of the chemical materials previously supplied. Next year, it will be something else. And once a few years pass, the next generation won’t even know that they are missing something.
“None are more hopelessly enslaved than those who falsely believe they are free” wrote Goethe. He had a good point.