This is a misrepresentation though.
First - cheap labour is still a huge part of the value. Point blank. I quote from China and you can see literally the 'labour' input on the spreadsheet, and on that basis alone, it's still very competitive vis-a-vis the West.
Second - the reason 'all those skills' exist there, and not here, is because of the wages and conditions. They do all those things at far less than 1/2 price than they do here. That's a big deal. And for the most part, they are effectively commodities.
If Apple et. al. wanted to pay 'American wages' for most of that activity, then major clusters of those skills would develop here.
Very importantly, there is the 'trade asymmetry' in that China has trade barriers, the US largely does not.
It would be 'good' if both economies kind of opened up, but it's like a 'prisoner's dilemma strategy game' in that, it's even better if you get your opponent to 'open up' while you 'remain closed'.
The US has lost dramatically by allowing China on the same WTO terms, and all the other shenanigans. The US should really simply implement 'tit for tat' trade policies such as requiring Chinese companies give up their IP in the US while the US hands to a strategic competitor, not allow them to have >50% ownership of anything, put up indirect barriers, the US Treasure could direct major US banks to subsidise Cisco's customers for export, yada, yada. It seems dramatic, but that's what China is doing.
Finally, though we think of a lot of this as 'high tech' ... a lot of it is not. We don't worry too much about China making tons of 'plastic stuff' because we believe it's 'low value' - but as certain kinds of screens, disk drives etc. become truly commoditised, well, in some ways, it's a lot like assembling plastic toys, and the surpluses go to the buyers, not the makers.
Edit: I'm working on a project where our factory price in quantity is $60 here, will be in $20 in China and overall, it all boils down to labour input costs and overhead through the value chain (i.e. N. American manufacturer pays more for Internet, largely due to labour, those costs get passed on). In the end, it's not the price of the materials, it's the layers of services by humans on top.