I don't get it. It's US companies standing to loose their stronghold (near monopoly) on social, advertisement, and other forms of monetizing the web if the US creates a precedent for "national security" in this way, as in "we're welcoming social networks and free speech as long as it benefits the US and can be searched without warrant." Quite predictably, governments all over the world will be pressurized to question…
What's stopping Volkswagen from lobbying Germany to ban Teslas because all the cameras in it pose a "national security risk"? This is, by all account, a shortsighted move
Also, Tesla doesn't have 80 million monthly active users in Germany who are young & impressionable.