Regardless, who do you think it is that supplies those companies with gear? Qualcomm, Ericcson, Nortel, Alcatel-Lucent, etc. The government is trying to protect the $100B+ annual revenue of those companies. They don't want ZTE and Huewai entering the market and undercutting the domestic suppliers, which is exactly what would happen.
So the US government is protecting revenue streams for other countries' companies? I think you're reading too much into this.