The two versions of “One Day at a Time” are noteworthy bookends in the history of television, and, by extension, the history of mass culture in America. The shows are separated by 40 years of technological advances — a progression from the over-the-air broadcast era in which Mr. Lear made it big, to the cable age of MTV and CNN and HBO, to, finally, the modern era of streaming services like Netflix. Each new technology allowed a leap forward in choice, flexibility and quality; the “Golden Age of TV” offers so much choice that some critics wonder if it’s become overwhelming.

It’s not just TV, either. Across the entertainment business, from music to movies to video games, technology has flooded us with a profusion of cultural choice.

More good stuff to watch and listen to isn’t bad. But the new “One Day at a Time” offers a chance to reflect on what we have lost in embracing tech-abetted abundance. Last year’s presidential election and its aftermath were dominated by discussions of echo chambers and polarization; as I’ve argued before, we’re all splitting into our own self-constructed bubbles of reality.

What’s less discussed is the polarization of culture, and the new echo chambers within which we hear about and experience today’s cultural hits. There will never again be a show like “One Day at a Time” or “All in the Family” — shows that derived their power not solely from their content, which might not hold up to today’s more high-minded affairs, but also from their ubiquity. There’s just about nothing as popular today as old sitcoms were; the only bits of shared culture that come close are periodic sporting events, viral videos, memes and occasional paroxysms of political outrage (see Meryl Streep’s Golden Globes speech and the aftermath).