> But it doesn't address first mile to hub. Can a bumfuck workshop in a hamlet deliver in Greece deliver to warehouse in Poland across multiple jurisdictions for peanuts?

Yes, unless they're doing so at a ludicrously small scale. Sending a 20t lorry load from Thessaloniki to Warsaw will cost less than 6000 euros. I suspect it can be done for around 2400, but I don't know the route very well.

>My understanding is EU first mile is fragmented/slow if you rely on national post and expensive if you rely on private couriers.

Yes, it sucks at ultra-small scale. But that's really what that is. The private couriers have super attractive volume pricing, even 80% off public (consumer facing) rates isn't unusual.

So the answer is really no considering vast majorities of SMEs i.e. 99%+ of EU business operates at "ludicrously small" scale that can't fill a container, i.e. about half of EU internal trade. 80% discount off what base price, because if after 80% discount off high priced EU courier rates and final cost more than one euro, PRC still comes out ahead, i.e. PRC domestic first mile prices are like 20-80 cents per parcel. Unless private EU courier rates are 1-5 euros (they're probably not), they still lose to PRC first-mile. (TBF I'm just assuming EU courier prices, my knowledge more limited to PRC logistics). If that's the case, EU simply can't compete, as in EU systemically not capable of matching PRC price floor. Hence IIRC why EU plan to add flat custom duty per item on Chinese parcels to make them more expensive. Like I'm sure many established businesses factor/absorb higher shipping cost into opex, but ultimately shipping cost/friction affects things like startup formation in first place etc.