It's complicated, not only by the fact of BASIC being available in ROM originally, but by the fact that there were OEM versions of MS-DOS that didn't come with

It's complicated, not only by the fact of BASIC being available in ROM originally, but by the fact that there were OEM versions of MS-DOS that didn't come with BASIC. The DOS that came with one's PC was rarely vanilla MS-DOS. I had a couple of PCs where the only programming tools that came in the box were EDLIN and DEBUG.