I thought you were going to talk about Television industrial design (not the shows) which is another product category that's getting ridiculous because it won't get flatter. It's even starting to abandon technology/design, which they've fully tapped for variation, and is trying to make into art work these days which I guess is the end goal of all product design assuming it maintains its full utility. Some people just want a TV not a 60" framed piece of art sitting in the middle of their living room.

Product differentiation for the sake of differentiation is always a dangerous game. Someone posted here the other day about "peak products" where the product reaches an ideal state which is an interesting concept!

The problem is an obsession with constant newness misses stuff like privacy, customer support, longevity, etc. But they care more about having a new flashy SKU for next season which looks different.

Edit: the Wikipedia for "Jumping the shark" is excellent, apparently from when Fonzie jumped over a shark in water skiis as part of a promotional gimmick on Happy Days. https://en.wikipedia.org/wiki/Jumping_the_shark