... for now. Anytime I download an unsigned binary I need to go through this song and dance of figuring out again what command I need to run to strip the quarantine tag because none of the UIs that are supposed to allow me to trust this binary work.

The company making laptops locked to an app store is Google.

Microsoft attempted to lock Windows to their app store twice, with both Windows RT and Windows S, but the market rejected both of those attempts.

Apple hasn't done that, despite claims that it's coming any day now for at least a decade.

That would be

     xattr -d com.apple.quarantine /path/to/file