I think there's a super important distinction here between hardware and platforms/software. The GP was annoyed that they bought a PixelBook before Google killed their hardware division. If I bought a Dell XPS laptop to run Windows, and Dell announced the next day they were discontinuing their XPS line, I wouldn't regret my purchase. Dell's decision doesn't change either the utility of my current hardware or the overall Windows ecosystem.

Regardless of whether or not Chrome OS is here to stay—I very much think it is, personally—Google closing their hardware division doesn't tell us much about Chrome OS's future. Only a tiny fraction of Chrome OS hardware comes from Google itself.