The device manufacturers aren't adding stuff like that, they are removing it. iTunes now sells non-copy protected mp3s and Amazon's mp3 store is gaining ground as a major competitor.
The fact is DRM didn't work. It hurt sales and it hurt the industry because it made music you purchase incompatible with different players. That is a violation of fair use laws and is the reason why people are rejecting music tainted with DRM.
What I think the music industry needs to come to understand is that paying for a physical device (a CD, a record, a tape) to get your music is a dead concept. Locking a downloaded song to a particular device was tried and failed, so that too is a dead concept. The industry needs to re-think how it generates revenue because the old way of doing things is pretty much obsolete.
Myself, I've never purchased a DRM'd song in my life. Until mp3s started selling on Amazon, I would buy the CD and rip it once I received it. I think the good news for artists is (and this is just a personal observation) since Amazon's mp3 store opened I've purchased more music in mp3 form than I ever did with CDs. So maybe the new way of doing things is to open things up rather than lock them down and in so doing, make even more money?
No, DRM didn't work. But major record companies are still greedy and they think in strange ways. I'm not sure they are quite ready to give up their huge profits and marketshares without a fight. These are the same people who purposely degraded the quality of vinyl recordings in the early eighties to sell a more profitable format, the CD. Do they have a more universally compatible protection format up their sleeves?...
Although, they may no longer think of recorded music sales as they once did. They make money from publishing, merchandising, radio, TV, and movie play usage of musical products... will they simply expand this revenue base?
If it is the former, we'll all get p!$$ed off again and their recorded music sales will decline. If it is the latter, artists will get squeezed even more. If it is both, look for an exponential increase in indie labels and artists (as if it hasn't already started) who won't put up with this kind of cr@p any more, and go out and do things on their own.
Personally, I can't believe mp3s are as popular as they are. Except for convenience, most commercially popular digital formats are mediocre, at best. Sonically, music has taken a huge turn for the worse and most people don't even realize it. If you have ever heard a 30 IPS 1/2 inch master tape played back on a finely tuned Ampex ATR 102 (or a Mobile Fidelity album made from such a master tape) through a really good system, you know what I'm talking about. Until then...not so much. But that's just one Analogman's opinion.