It’s Google’s World. We Just Live in It.

Outside smartphones, Google is the dominant force on our personal computers. By some estimates, more than 65 percent of us use Google’s Chrome web browser. And in education, our schools have chosen the Chromebook, low-cost PCs that run Google’s operating system, as the most widely used tech tool for students.

This can be brief: YouTube is by far the largest video-hosting platform. Period. About 215 million Americans watch YouTube, spending 27 minutes a day on the site, on average. That’s up from 22 minutes a few years ago, according to eMarketer.

Another way you might watch Google videos is through YouTube TV, a streaming service that offers a modest bundle of TV channels. Released in 2017, YouTube TV had more than two million users last year, according to Google. That’s not far behind Sling TV, a similar bundle service introduced by Dish in 2015, which had about 2.6 million subscribers last year.

If you recently bought an internet-connected gadget for your home, chances are that Google is behind it. After all, the company offers Google Home, one of the most popular smart speakers and powered by Google’s virtual assistant, and it owns Nest, the smart-home brand that makes internet-connected security cameras, smoke alarms and thermostats.

We often interact with Google even when we use an app that lacks a clear connection with it. That’s because Google provides the cloud infrastructure, or the server technology that lets us stream videos and download files, to other brands. If you’re using TikTok in the United States, guess what: You’re in Google’s cloud. (TikTok may soon switch cloud providers under a deal with Oracle.)

Even Mr. Weinberg, who quit Google, said he had been unable to shake its services entirely. He said he still watched the occasional Google-hosted video when there was no alternative.

“If somebody’s sending a video that I need to watch and it’s only on YouTube, then that’s just the reality,” he said.