Gated how? It's all on textbooks, industry standards, Internet, everywhere. You could buy a KHR-3 without even driver's license for $1.5k cash for past ~20 years. I guess CUDA was technically gated behind "I swear I'm not a bad guy" button, but that was it.

I'm surprised that Ukraine isn't DIYing full-on solid motor cluster SAMs and armor piercing ATGMs. I thought those kinds of devices were something just about any sufficiently developed country can do in days to weeks should such national emergency arises and all bets were off, except nations in peacetime has moral obligations to do no evil.