Other companies have kept their 2 strokes on life support only if to save face with their consumers, but I doubt they'll carry it on much longer regardless of the resurgence of the 2 stroke. They aren't keeping them alive because it's the right thing to do, or that they sell well (Yamaha only produces a very small amount of 2 strokes that they import here into the U.S, they sell out of them very quickly but how long do you think Yamaha will keep doing so when they are having problems moving their 4 strokes? Still quite a few YZ450 and 250F leftovers in dealers showrooms from 1-2 years ago on top of the "revolutionary" 2010 450F and 250F bikes that are still on show room floors unsold and heavily discounted). Doesn't say much for Yamaha and their mighty 4 strokes and I can see them dumping the 2 strokes to save face...
I've always thought the reason they kept their 2-stroke line up was to"save face"and also what is Yamaha as well as the other Japanese companies going to do when us consumers don't want to buy anything from them but 2-strokes ?? I personally believe they will start to bring back the 2-strokes once they realize that's all the average consumer wants to buy!NOT to mention the 2-strokes are the only bikes moving off of the showroom floors & the "Big Four" are'nt moving any of their new 4=strokes like they expected to do.It's almost funny to some of us die hard smoker fans...
You'd be surprised at Honda holding out on the 2 strokes even if others move in / profit where Honda once dominated in sales (KTM and Yamaha are doing it now). Honda will never make the same mistake in doing a 180 on their stance against the 2 strokes. They might do it through a shell company, but never through Honda directly.
Again, I really don't know why Yamaha even keeps the 125 or 250, they haven't improved the motors since at least 2001 and the cosmetics since 2002, the frame since 2005, and the suspension since 2006. The bike is far from perfect and motor improvements could really help it, same with a better frame geometry... I do know they sell out very quickly, but they don't import a lot to begin with compared to their 250Fs/450Fs. I'd really like to see where they go with the two strokes but I honestly don't see them producing them much longer. I'd love to be surprised though.
As for KTMs 2 strokes, well we'll see. They were quick to fight the 250 2 strokes racing in the pro class against the 250Fs, they aren't any more a friend of 2 strokes than Honda is, they're just business savvy and want to take advantage of the vacuum created by the other manufacturers pulling out (Suzuki, Kawasaki and Honda). They are in the same boat of the other manufacturers in having spent billions on development and advertising how technologically superior the 4 stroke is, in fact they just spent a ton of money developing a 350SXF that honestly is a dead end competitively (much like Honda's 150R), when they could have pushed out DI powered 2 strokes instead completely turning the industry on it's head...
Maico I think is about the only one who is behind the 2 stroke movement 100% but we can't even get the new ones imported yet. Time will tell though how the 2 stroke resurgence will impact racing. For me it'll be 2 stroke no matter what, but I would like to have a new 2 stroke with actual NEW R&D put into it, and actual improvements instead of lip service (KTM, Yamaha).