Maybe I'm grandiose but I see the "form factor" as key: MP3 players existed before ipods. Some people found the new form factor more convenient.
Similarly they way Django Doctor works is more convenient:
- it's suggests a change that can be applied in one click - it's suggestion can be ignored - no overhead cost because it's SaaS
but yes, if you don't value SaaS in this context then that's fair enough :)