Several responses above have it right - last I looked Powder Valley had several powders suitable for 45ACP. Lead bullets may be tight now but should come back first of all the components (large number of sources, fairly simple supply chain). Primers might be the broken link - but depending on where you live, keep an eye on private sales (Craigslist does not seem to mess with component sales), be prepared to pay a premium if you really need them now, and recall that you can use magnum primers.
Meanwhile, I want to live where huey lives (in terms of LGS reloading inventory - wow). I'm sort of accustomed, in the web-based world, of no longer being able to handle much inventory at brick and mortar places selling any hobby or non-staple items. Sure would be nice to walk in buy primers or powder, though .....
At the same time, I never want to live in the country huey fears (punitive taxation to smother shooting/reloading). For now I think inertia will prevent that (might even be some actual barriers to that existing case law). Inertia's a sad substitute for common sense, rule of law, intelligence, and some historical literacy and connection to the American experience, but those apparently no longer have much of a role in American civic life. Inertia, the greatest force in nature, will have to do.