What about producing Hypertek motoer? Is that difficult too? Really.......Remember, CTI is in Canada... there may be other issues involved as well. Importing propellant chems from the US may be "difficult"...
If they cannot import HTPB, Aluminium, KP, they haven't got a business model. That's white lightning, which they're not making in amateur rocketry reloads.
It's the fundamental basis of most propellants....ish. So if they're in business, they're just not supplying the amateur community. When war is on, we mean nothing to them in market share. When war is off, we mean more to them. But if they cannot supply us, the vacuum will be filled. Economics 101.