From a certain perspective, the Starship is a more evolved version of certain STS-Apollo variants - https://www.wired.com/2012/04/the-lut-the-shuttle-and-the-sa..., one proposed North American X15B design http://www.astronautix.com/x/x-15b.html and a few dynasoar configurations.

Spaceplanes haven't gone away. They've just been evolved. The Shuttle, for all its mistakes, got a lot of things right and brought incredible capabilities to the table that are well worth re-exploring and re-imagining.