All I was addressing in my response was the complaint that American officials were rejecting the purchase of sensitive defense related companies on flimsy grounds. No more no less. And the charge was to BUY these sensitive American companies outright, not purchase a piece of these companies on the stock market.
It is up to you to clarify what you meant by flimsy grounds and not leave your intent open for speculation by cloudy and ambiguous posting
Here is the thing, if China wants to open bid on Boeing and Lockie ownership, then yes they would be blocked, however there are a wide range of dual use high technology company/product that US refuse China to invest in, which are far from pure military application, but since it is dual use so they block it automatically regardless.
However funny thing is, Europe, especially Germany does not have such reservations you know? They openly sell those technology to China, and of course China learns something from it and produce their own in the end. But it has gotten to the point that everything US refuse to sell, China gets it elsewhere, and in the end produce the similar product that is actually very similar to the ones that US refuse to sell int he first place, but at a far cheaper price.
In the end, China uses them to put the American corporation that are forbidden to sell to China out of business because they can't compete. But Germany on the other hand, which allowed to sell to China, they used the money they earned from the Chinese sell invest back into their R&D to develop the next generation of product, which in the end will be more expensive than what China can produce, but still at higher tier quality and efficiency, and they are still using this expertise to stay ahead and alive.
But, I can't say for the US corporation, since they are forbidden to sell to China which is the world's 2nd biggest market in the world, they won't earn the profit, so they won't have enough money to invest back into R&D to keep their competitiveness, in the end they die.
So in the end, it is still the problem of US's perception of what China is and how to deal with China, the old traditional way to deal with Chain is to seal it, isolate it, contain it, it worked with Soviet Union and it worked with all those small nation US tried to sanction. And unfortunately they try to apply the same lesson to China, which is pretty impossible due to the obvious reason.
I think you want US to be strong, and so am I, after all I live here, but I think the more effective way to deal with China is by engage it rather than to isolate it, because when US trying to isolate China, in the end, they are isolating themselves, they are shutting themselves off from one of the world's most dynamics market. You can't beat China by with direct confrontation or sanction, you can only beat China by working with China and try to stay ahead.