music: Is "Wonderful Christmas Time" really worth $400K/yr?

This post is trivial by any measure relative to recent events, and I may write about recent events in the future. 

At the moment, however, this fact enrages me:  Sir Paul McCartney has been raking in four hundred thousand dollars per year from "Wonderful Christmas Time."  He has earned, according to Wikipedia, approximately $15 million from this one craptastic-yet-catchy song.

If you like it, I'm sorry.  No, you know what?  I'm not sorry.  It's a shitty, soulless song.  It's the Michael Caine of Christmas songs*, a where's-the-check performance that relies on one annoying beeoom-beeoom-beeoom-beeoom synthesizer riff, candidate for one of the worst earworms in music history, plus a dreadfully repetitive chorus, all relying on our love of his voice to carry the day.

What's a good Christmas song?  How about David Bowie and Bing Crosby singing The Little Drummer Boy?  Worlds collide in an unexpected, grace-filled way. 
http://www.youtube.com/watch?v=ADbJLo4x-tk

 *Caine's recent performances have redeemed him; I speak of him in the long middle section of his career.