Frankly I wish Python's standard library were more like this. Maybe then we wouldn't be seeing tens of millions of daily downloads of pip (most likely orchestrated by other copies of pip!), requests (already vendored by pip!), setuptools, six (compatibility wrappers for ancient 2.x code, declared as a dependency by python-dateutil so that it can keep supporting 2.x, even though it's overwhelmingly downloaded for up-to-date Python installations)....
...There are presumably many other ways to solve that problem, but still.
When Ruby gemified the standard library, it wasn't about moving popular third-party libs into the standard library as gems, but making large parts of the standard library separately updateable (and, in some cases, removeable); all of the standard library used to be the equivalent of "default libraries", the change was moving them from that status to default or bundled gems.
So, doing the same thing with Python would be less like bundling requests with python and more like moving http into a wheel that was installed with python but could be upgraded separately.
...There are presumably many other ways to solve that problem, but still.