Earlier quoted context omitted.
Ubuntu has been doing the same thing as Apple with their new UI, trying to jump in on the tablet bandwagon, with this belief that tablets are the future. This is fairly stupid, considering that Ubuntu's marketshare was pretty much 100% PC, 0% tablets. They gave their main demographic a slap in the face, and they never really did acquire any tablet market. Now, according to DistroWatch, Ubuntu is below Mint and Debian…
Immaturity leading to think that following market trends instead of believing in (and even 'still understanding') you're own quality, will be the only way to sustain your business. Jitter.
The Linux distro's actually serve multiple 'customer' segments. On the client side there are at least two customers (at a minimum), one is end-users, the other is the OEM's who pay for Linux to be preloaded. The traditional OEM's need a solution to the PC market shrinking while the devices market has eaten their lunch.
It's true you have to determine the difference between a short-term 'trend' and a long-term shift. I'm sure you don't think that the mobile market is a short-term 'trend'.