Maybe. But let's look at the burgeoning marijuana industry in the US. The Dutch had that shit relatively legal for years and what did they do with it? The had a crude vaporizer to smoke your buds, some hash, and maybe a few muffins, cakes, or shakes. Not much really advanced when compared to the innovations of the last five years or so here. Now we've got little cartridges with vape pens and every kind of edible it's possible to infuse with THC. Then there's all sorts of medicinal cremes and the like. Various methods of hash making. Strains are advancing. I think Americans are still highly innovative.