There is a good reason why American companies are scared. It almost never works out for them. Sony vs Zenith TVs is a great example about how a foreign company improved on a technology (color tv) and made zenith look like a stingy dinosaur overnight. Instead of selling color TV’s zenith just doubled down and sold cheaper shittier TV’s. By the time color was standard, their reputation was ruined and no one wanted a Zenith when Sony was the best. Sony however wouldn’t have been able to get into the market without help from zenith in the first place.