Cities do not usually cheer the downfall or even the diminishment of the hometown industry, but the relationship between San Francisco and the tech community has grown increasingly tense.

Two years ago, radicals began delaying and harassing Google and other tech companies’ shuttles as they threaded San Francisco’s narrow streets. Now — after the city officially gave the shuttles free rein to use public bus stops; after the tech elite were accused of trying to buy a crucial local election; after the home-rental company Airbnb spent a fortune to defeat a proposition that would have restricted its business — the discontent is mainstream.

In December, 39 percent of Bay Area adults said they thought things in California were headed in the wrong direction, up from 29 percent a year earlier, according to surveys by the Public Policy Institute of California. In Los Angeles, by contrast, the percentage expressing general disapproval fell from 37 percent in 2014 to 33 percent in 2015.

“It’s practically a ubiquitous sentiment here: People would like a little of the air to come out of the tech economy,” said Aaron Peskin, perhaps the most prominent leader of the opposition. “They’re like people in a heat wave waiting for the monsoon.”