Indeed. Typical scenario, I have software X that can follow such a process:

    tar xfvz foo
    cd foo
    ./configure --prefix aze
    make
    make install DEST_DIR=qsd

I want to package this to save build and deploy time as well as increase reliability. It should be downright trivial to:

    1. find the info explaining me how to do this
    2. understand it
    3. effectively do this

Debian fails even starting with step 1. Even if you manage to go through step 2 with some hair left, step 3 is insane compared to the mentioned alternatives.

This does not even involve step 4 (contributing the package back if it's not for internal use)