There were initiatives to improve CPython at Google and Dropbox, both of which switched to Golang and van Rossum left.

We'll see if this is a pattern and the same happens at Microsoft.

I believe both Google and Dropbox had a lot of Python code powering their products that they wanted to make faster. I don't think Microsoft has many large 1st party uses of Python. I think they're investing in it largely to gain developer mind-share. So for Google and Dropbox "use another language" was an option, for Microsoft it's not.

Because if you want full ecosystem compatibility with as much performance as you can squeeze given that constraint, it makes more sense to start with the constraint satisfied rather than try to work toward it.

> Oh I think NIH syndrome.

Neither CPython nor PyPy was invented at Microsoft.

Python was by Guido who's now Microsoft employee

From what I remember, PyPy has some fundamental issues with using libraries with C extensions.

That was a decade ago, alot had changed