Windows NT was one of them. Up to Windows XP the products were pretty solid and each had visible improvement against the previous one.
Their language products were/are still solid IMO. Maybe Visual Studio is sluggish, but we can still use an older version if we want. Plus they put a lot of effort optimizing VSCode, too.
Even back in the MS-DOS/16-bit Windows days, when things broke down quite easily, I think they still provide the best bang for individual users and developers. There was no competitors who could provide so much value back then.