Totally agree and feel your pain - been there, done that myself many times (which makes it so much more obvious why the European Union has such high value, 30 years ago I had a small business in Germany and sold computers and at that time exporting to e.g. France was the exact same pain).
We, i.e. Purism, have been thinking about such a fulfillment hub within the EU for quite some time but this is a larger enterprise than you would kind of naively expect and that’s exactly why we are still struggling with implementing it. The will is totally not the issue here, it is more the tremendous effort it takes if you want to do it right (and not just rent a half legalized warehouse like many Chinese sellers e.g. via eBay who do not care about local regulations at all).
Cheers
nicole