Comment by temac

Generalized tabs accros even different programs is an experiment that has been attempted a few years ago in a few insider builds, but has been quickly abandoned. IMO it was too complex from a UX pov, duplicated some of the use cases of virtual desktops, etc. Maybe had they tried tabs for single applications, it would have succeeded. In this alternate universe we may not have the new Windows Terminal program though (IIRC adding tabs specifically in console.exe was prevented because they were about to start this grand inter-program tab design instead, and Windows Terminal was started after the experiment failed)