Companies tend to fight back when it's profitable to fight back; and do their best to ignore the government otherwise. See: this week's tech CEO house hearing. I can't recall this example of the backdoors; and if you say "Clipper Chips" I'm going home.
Of course I don't mean clipper. I mean the backdoors in US telco equipment - some uncovered by Snowden, some discovered by independent researchers. If your theory were true, Chinese network equipment would be full of government backdoors, and US manufactured equipment would be free of them. In the real world, however, the reverse is true.
