What I'm trying to say is that the companies spend money on the problem of Python performance. I doubt much of it is upstreaming improvements to Python, though

What I'm trying to say is that the companies spend money on the problem of Python performance. I doubt much of it is upstreaming improvements to Python, though I'm sure is (at least indirectly, funding Guido and other major Python developers), but most is probably just improving their own internal libraries, or, more likely, finding ways to FFI.