Most products are specifically packaged for a given market. Especially with more regulated products, it's may be legal to import the product itself, but not in the packaging that is legal in other places. Plus there are language barriers, supply network differences, differences in store shelf standard sizes so bottles fit on shelves, etc. It likely will take time to design and produce the packaging, push the product to each stage of intermediate warehouses, and finally get it to stores.

That said and individual could import their own, but you'll have to pay for the shipping yourself and deal with any market differences in pricing and costs of currency conversion if your credit card doesn't do it for free.