A newly released report conducted by Midia Research:

AAA developers on console and PC are continuing to chase the live-service jackpot, but single player remains the favourite way to play for most (53%) gamers.

and

While new live-service games have floundered, new single-player games have continued to smash records and generate hundreds of millions – or more. And it is not just juggernaut IP like Zelda and Spider-Man proving successful but also new franchises like Elden Ring (25 million copies sold) and Black Myth Wukong (20 million).

The report seems to outline that the majority of gamers who prefer single-player games are those aged 25+ with live service games skewing younger.

It’s also worth noting that whilst gamers prefer single-player, successful live service games make the most money, by a long way, which is why Publishers prefer them.