If I could get Mark in a room I'd have only one thing to say to him.
Why, oh WHY is Smashwords so god-awful ugly?
He preaches cover design like crazy in that interview, right?
WHAT DOES HE THINK A WEBSITE UX IS?!
Select is a tool. Other resellers offering tools of their own would mitigate Amazon's offering. But they don't. (iTunes is JUST NOW starting to give some discovery . . . to people who have already made it.)