The "automagical installation" is something that can be done, but it's up to the provider to do it. A Python website (as well as for Ruby) ain't a bunch of files served by Apache, but something more... smart.
Call me crazy, but being able to drop files into a docroot of an apache install and have them Just Work seems like a much smarter market strategy for uptake of your product than what can currently be done with either Python or Ruby.
Then again maybe you had a different idea of "smart".
The "automagical installation" is something that can be done, but it's up to the provider to do it. A Python website (as well as for Ruby) ain't a bunch of files served by Apache, but something more... smart.