Not impossible. Intel chips from 2008 or earlier still work. I like the Thinkpad X200, the most recent Intel-based laptop that can be flashed to use Libreboot

Not impossible. Intel chips from 2008 or earlier still work. I like the Thinkpad X200, the most recent Intel-based laptop that can be flashed to use Libreboot instead of stock firmware. For workstations, Raptor Engineering is working on an open hardware motherboard design based on the POWER architecture, which IBM recently opened. https://raptorengineeringinc.com/TALOS/prerelease.php https://raptorengineeringinc.com/TALOS/prerelease.php In the future, RISC-V looks promising. There is also a subset of ARM chips which seem safe.