The big companies are very new to this game and the people who think they are big players, aren't. Apple seems to be the only one that has some teeth as they were able to resist being compelled for the signing keys, however the powers that be just went to the Israelis for a crack.
If you want to see what effective lobbying looks like look at Lockheed, Northrop, CACI, Honeywell etc... These guys get massive legislation passed, sponsor candidates, control voting on the floor of Congress. Musk has arguably come the closest to being a real player in the game but has a very mixed records and is not rely seen as as much of a threat to ULA and the auto industry.
Silicon valley is realizing it needs this, but it has been lucky so far that it hasn't had to fight many entrenched players. This will change as ambitions rise.