>"Can do" assumes "able to do"

> industrialized/advanced approaches everything

Can do, does not in fact translate to able to do, for advanced/industrialized economies. It takes about 150k workforce to build long body civil aviation industry. US as country can muster that critical mass. EU has to muster that as a bloc (as you recognized). Developed economy <200m pop without bloc can't. That precludes most of the world. 50 years ago, there was less complexity, and many more smaller players "can do" their way to long body civil aviation, now they can't, they are not "able to do", the scale has grown and those smaller economies don't even approach/"can do" in the first place.

>So can the US. Are you saying china can create something we can't figure out?

>small/medium countries will collaborate

US has projected technical talent shortage in semi in 100,000s. Hence US only try to reshore fabs vs PRC semi brrrting talent to execute industrial policy to indigenize entire semi supply chain i.e. it's something US maybe can figure out, but can't execute, again not able to do on it's own, so it doesn't even try. That's really the crux behind original quote, EUV is made by people... but the broader context is EUV (and supply chains) is made by consortium of countries, i.e. common rhetoric is EUV is made by the world, how can PRC replicate global effort? The answer is EUV is made by a small handful of countries with fraction of PRC population, PRC talent pool and industry large enough to single hand speed run global coordination. Hence PRC is able to do everything, even things that require others to do as bloc.

>China is a subset

>predicated entirely on western knowledge/tech >I'd say there is nothing that china cannot build.

Was a subsect. Now much of their dependencies are gone. That dependency made clear by export controls is why many PRC industry doubters existed 5-10 years ago who definitely thought there were things China could not replicate, EUV supply chain is one of these. The other is a competent national football team. But domestic industrial chain and talent generation has expanded so much so fast that much of doubt gone. The motto, was specifically made in this context. PRC techno-optimist look at all the other concurrent major indigenization projects and the underlying meaning morphed to PRC can build not just what another country can build, what another bloc can build, but everything... simultaneously, i.e. post war US hyper hegemony type of sole player. It is not your generic can do attitude, it's can do anything, and everything at the same time. Continental scale, industrial sovereignty/autarky tier of ambition.

>smaller than the west and its allies

It's roughly the same size by pop, unless you through in 3rd party India then when might as well as through in global south for PRC. But if we're talking about useful indicators, PRC produce more talent i.e. about same as OECD which is more than US+co. Industrially, PRC produce as much as core US+co block, US+co produce more by value add. Both are flow measures. But if we look in raw output / actual material production / output, PRC can be substantially larger than west combined. Many raw inputs (ree steel aluminum etc) small intermediate goods PRC make more than RoW combined. The exception is of course the pinnacle that PRC hasn't figured out, thrown industrial printing press at. But things like auto, spacelaunch, semi, civil aviation can go the way of PRC shipbuilding, one of the mature strategic industries where PRC now produces more than RoW combined.