The company encourages those who have been holding out hope for a larger iMac to consider the Studio Display and Mac Studio or Mac Mini, which pair a 27-inch 5K screen with a separate computer, compared to the all-in-one design of the iMac.

The Verge – https://www.theverge.com/2023/11/6/23947196/apple-no-27-inch-apple-silicon-imac

Apple in 2023 makes some questionable decisions but this is top of the list I think. I know so many people (myself included) who have owned a 27″ iMac, it was such a great “bang for the buck” buy for almost its entire run. The decision not to make another one is absolutely mind blowing.

I’m guessing it somewhat falls down to the fact they’ve backed themselves into a corner on price with how expensive everything else in the range has become.