Is the revenue generated for Canonical by Banshee worth the goodwill costs associated with it? Based on reading about Banshee in openSUSE, I’m guessing no.
This isn’t even a case of good business decisions being put ahead of community interest. It’s not very good business at all.
P.S. My guess is there will eventually be a PPA that has this change reverted and people will respond to “If you’d rather the money be donated to Gnome, install Banshee from my PPA”.