This survey asks about DRM as a whole, but not all DRM are created the same. The biggest fear for DRM for me is if the source of authentication goes dead - are you *renting* music or *buying* music for example? Do I need a constant connection to the Internet? These kinds of fears help nuke any source I don't trust, but probably would not be a big deal with old iTunes, for example.
Also, something like Steam is perfectly fine for DRM. I'm only going to be playing games on Internet-connected desktops and laptops, and Steam's DRM saves me a trip to the store and offers pretty big discounts on older games. The only problem is, say, booting a laptop on a plane, but Steam lets you keep old authenticated sessions, so it's not a big deal.
DRM is plainly a "disadvantage" when looked at alone, but you have to ask what the DRM is getting you. In the case of Steam, it's obvious - cheap digital download games. For old iTunes, it's moderate - you don't get THAT big a discount off store prices. For random other small things, it's probably not contributing enough and is actually bad. So yeah, not really a one-size-fits-all answer.
