Beyond business software, I can think of the way that indie games are delivered as early releases on Steam. Most recently, I would get excited for every little Valheim update. It extended the life of the game, which probably won't be truly done for many more years. If they were limited to a single boxed physical release, the game would be left with a shorter development cycle limited by the production budget. Now, the game's sales more directly dictate the level of attention the game gets. Concepts are validated earlier and customers get to more frequently provide feedback rather than developers spending years building something and hoping that people like it.
That particular developer also did a great job of generally not breaking your world and save game (somewhat unlike similar creative/survival games like Minecraft, where you'd be missing out on a lot of things by not starting fresh for each major update).
Sure, frequent updates can break things...but back in the day, there were still plenty of bugs on formally released products, and then you're stuck with those broken things for months or years waiting for the next version to physically ship to you.
One of the things that makes CD/CI possible in the first place is that testing has become far more automated and sophisticated. No one would tolerate CI/CD if it didn't have that additional level of automated quality.
When I see someone who claims not to like when software gets frequent updates, I ask myself: "Do you even like software? I thought new functionality was supposed to be exciting!" I personally see resistance to change as a generally negative personality trait (obviously, there are limits, not all change is good change), and I think that's why I don't understand the romantic nostalgia for the days when we'd buy a piece of software in a box off of a shelf.