To use windows as an example. You wouldn't expect the usage of windows to change that much during your usage of a particular version. XP, probably my favorite (if such a term can be applied to windows), stuck with basically the same layout in terms of desktop, menus and directory structures. It never evolved substantially throughout its life. Ubuntu on the other hand (and a whole host of other GNU/Linux based distributions), can change it's look and feel substantially between different versions (ie, every 6 months). I don't think that windows would have been a success (in commercial terms) if it changed so much so quickly.
Whilst I accept that there are very good reasons to move forward, the issue I see is that not enough effort is put into keeping existing users happy. We want to keep up-to-date but we don't want our experience of the system to change too much. When Ubuntu was still using Gnome 2, you got a fairly nice progression. Gnome 2 improved but did so quite slowly. You also got a chance to say yes or no to wizzy 3d effects. I, and I suspect many others were happy with a slower improvement and this is probably better than the occasional but much bigger jumps that MS would have done with windows.
However, Nintendo have shown with the Wii U that they are still prepared to take risks when it comes to their offerings and try to develop new ways to play games. I can't yet be sure that the Wii U controller is the best way to play a game because I don't think there have been games out yet that really exploit it but at least they're trying.
Sony and MS however could not have come out with more vanilla consoles. Both are basically glorified PCs. Whilst I'm sure there is some business logic behind this, I would like to know where the next generation of cell processor is? Where are the new and clever control mechanisms? Sony would seem to be churning out a slightly modified dual shock (presumably so you can't use your old ones) and MS are basically using Kenect again. So, PCs and the same controllers that were used before.
For me, I've yet to see anything from Sony that will let them loose my credit card details again. From MS, I get the impression they're not interested in attracting new gamers, they want new customers to use all the non-gaming services as all the existing customers are assumed will want to convert.
With respect to your comment on Communists, this reminds me of something Steven Weinberg said (although I heard it first from Richard Dawkins) - "With or without religion, good people can behave well and bad people can do evil; but for good people to do evil — that takes religion". The point of this is that the communists that killed religious people were not doing so because of a religious belief, they were simply bad people. When a scientologist does something bad, they may or may not be a bad person but its possible that they feel compelled to do something bad as a consequence of their belief.