I couldn't begin to come up with 100 names for the "most innovative" audio companies (or people), but Bob Carver certainly deserves to be included. Even if one disgrees with whether some of his gear is/was "high end", he has been one of the most consistently innovative audio designers/engineers in the business.
Sdcampbell (System | Reviews | Threads | Answers | This Thread)
Charlie101 (Answers | This Thread)
Like you, I do not agree with BusinessWeek and I would replace B&O with Linn Products Limited which is innovative in its wide range of products encomopassing a wide price range as well. They do make products of substance even acknowledged and praised by the audiophile cognoscente.
Jimjenjr (Answers | This Thread)
I think Scott's suggestion of Bob Carver is excellent.
The best I can come up with beyond that is Sony. Yes, I'm sure you are laughing now, but CD and SACD, was brought to us by them (and, Philips, of course). Whatever we think about MiniDisc and BluRay, they are not afraid to be on the cutting edge. Of course, you can riddle my suggestion ala their motives (profit, market share, dominance, etc.) for all of this; then again, I don't know too many businesses that have losing money as a goal.
I'll give honorable mentions to AtmaSphere and Magnplanar, although both of those products are mature enough that they kind of lose a bit of this description.
Sadly, most of the innovators in this industry come from another generation - AR, Williamson, Marantz, McIntosh, Apogee, Quad, and on and on...
Trelja (Threads | Answers | This Thread)
Dennis Morecroft[DNM],along with Carver,Klipsch,Hafler,Marantz ??More to be sure.
Usblues (Threads | Answers | This Thread)