Like quoted before, resale values as well as limited choices in the whole change-over phase, forcing people to change out parts they wouldn't have otherwise. Is the market large enough for manufacturers to do 26" and 27.5 on all products?What kind of downsides?
For instance I'm looking for a trailbike at the moment and the new Pivot Mach6 was looking extremely good on paper until the wheelsize issue. Would need nearly a complete refresh rather than being able to carry across a perfectly functional fork and wheelset from another bike for what benefit to me?
The fun factor is still there no matter the wheelsize but there is a larger barrier for existing users.