Export controls on China have reached a point of no return. A new and expansive package due this month or early next from the U.S. will mean that the semiconductor manufacturing sectors of the two countries are set firmly on a path towards complete decoupling. U.S.-China relations are likely to take a major hit, with Beijing ratcheting up its own controls on critical minerals exports, threatening a major tit-for-tat escalation.  Despite all the rhetoric from Washington about small yards