Dull electronics, because of the convenience factor. Nobody wants to carry a brick anymore, and instead of a huge CRT monitor, we can have 4-6 thin displays for the same weight. Also, no need to buy a Walkman or cassettes because streaming is convenient. This is the natural evolution of tech, serving humans to live more conveniently. Nostalgic? Yes. Desirable? No.

There are still weirdly shaped phones sold today (Unihertz, for example) and strange-looking music players for the home. They are not selling well because nobody wants them.