I do not count Thinkpad as open enough to be in the same segment anymore. I have owned many generations of them and some are still in use but will not be getting a newer one the way things look now.

One practical aspect is how they are very inconsistent in making crucial firmware updates available. In theory, they're on fwupd/LVFS. In practice, that can lag behind by months or even years and the only way to get necessary updates to get security fixes or get certain hardware working is many times to boot from Windows.