Not sure of any other company that does this: https://frame.work/marketplace/parts

Lenovo laptops are designed to be taken apart and every part can be purchased.

I didn't see any parts listed for a couple of the currently sold models in Lenovo's support section.

They are still better than everything else on the market. Not that I approve, but they still suck less than any other laptop you can buy today (except, perhaps, the MNT Reform).