Earlier quoted context omitted.
It's already easy to buy the stuff that works. You just have to go up to the counter and ask. You have to show ID, just like you do for liquor (and, because purchases of psuedoephedrine are rate-limited, they're going to log your purchase). You'll need to get over that, because I don't think the rate limit is going anywhere: psuedoephedrine essentially is methamphetamine, and it's the worst conceivable kind: the kind…
I guess some people will still (try to) make it themselves, but last time it came up here someone posted about how mass production has just moved on to some other synthesis that isn't dependent on buying a precursor in small retail quantities: https://news.ycombinator.com/item?id=37499106
Again: the issue isn't that you can't mass-produce methamphetamine without pseudoephedrine; at scale, it's presumably far, far easier to produce it without using pseudoephedrine as a precursor. The issue is that pseudoephedrine-based meth production is a particularly damaging kind of production, in the sense of burning down buildings, causing distinctive kinds of crime, and producing an even more dangerous product.