https://phys.org/news/2018-11-tech-taxes-mountain-view-san.html

"Our concern is that there is contagion around these types of measures, that other cities look to front runners on this, to test the waters to see whether there is support politically for these types of measures," said Rufus Jeffris, spokesman for the Bay Area Council, which represents Apple, Google, Facebook, Oracle and a host of other firms. "We definitely worry about a floodgate opening."

All three measures grew out of the widespread belief that Silicon Valley's booming tech companies add heavily to the region's traffic and high housing costs but don't pay enough to address them, said Mountain View Mayor Lenny Siegel, who spearheaded the head tax but lost his own re-election bid Tuesday.