Because that's how that country works? China uses other countries and companies as R&D.
The tropes are tiresome, reeks of hubris and bigotry
Where do you think the United States gets all its chips? We certainly do not know how to print them ourselves nearly as well as the Dutch and Taiwanese, probably the Chinese too. Are we not relying on other countries for R&D across a number of industries? Is there something bad about sharing advancements at the global scale.
blowing out other's candles does not make yours burn brighter