RANT why the *%#&%^ does installing pip not install setuptools???

[Brian J. Oney]

On Stretch:

~ $ aptitude show python-pip
Package: python-pip                      
Version: 9.0.1-2
...
Maintainer: Debian Python Modules Team <python-modules-team at lists.aliot
h.debian.org>
...
Depends: ca-certificates, python-pip-whl (= 9.0.1-2), python:any (<
2.8), python:any (>= 2.7.5-5~)
Recommends: build-essential, python-all-dev (>= 2.6), python-
setuptools,
            python-wheel
...
Tags: admin::package-management, devel::lang:python, devel::packaging,
      implemented-in::python, role::program

And:
~ $ aptitude show python3-pip
Package: python3-pip                     
Version: 9.0.1-2
...
Maintainer: Debian Python Modules Team <python-modules-team at lists.aliot
h.debian.org>
...
Depends: ca-certificates, python-pip-whl (= 9.0.1-2), python3:any (>=
3.4~)
Recommends: build-essential, python3-dev (>= 3.2), python3-setuptools,
python3-wheel
...
 

It seems deliberate, but I am not the person to ask why.