True, but they are pricey ($25+ USD for an album), and force you to choose between hi-res (24 bit FLAC) and CD quality, instead of purchasing rights to a song and offering MP3 as well.

I have an extensive MP3 collection, favorite albums I try to keep FLAC, while others I'm fine with MP3/320 or for stuff I collect but don't listen to all the time, VBR 256 is fine to keep size small.