Who is responsible for the upgrade of Android users

Since the public of Android 4.1 in June, one thing's been on our mind: "When is my device getting Jelly Bean already?"
Believe me: you may hear the message of your vendors, we are preparing android4.1 firmware development, I believe the near future will be able to provide for everyone to use. Because we are still struggling to provide a stable 4.0 experience, we have android4.1 upgrade plan included in the agenda, into the deliberations of the specific time still.
Therefore, no matter who asked vendors, you never know what the upgrade program will be executed when. Thus, on the Internet is full of rumors about android4.1, but no vendor is willing to seriously implement. Why? Because they will push the 4.0 upgrade complete, they will not immediately update android4.1 system. They have more important things to do, is to make money.

That's it. Thus far, we've seen no official plans from Samsung, Motorola, Sony, LG, Dapeng T5000 or any of the other moviles android manufacturers. Sure, we could make some educated guesses -- devices likethe Galaxy S III and Galaxy Note seem like they'd be shoo-ins, as recent rumors suggest -- but at this point, it's all hearsay and conjecture. And based on past performance, we know that reasonable expectations don't always equal reality.
By now, you probably know the reason for the uncertainty: Outside of Google's own Nexus and Google experience devices, Android upgrades are in the hands of manufacturers. And by and large, manufacturers have made it painfully clear that timely upgrades are not their top priority. (The fact that the manufacturers tend to devote time to implementing their own interfaces into the software certainly doesn't help.) The bottom line is that if fast and frequent upgrades are important to you -- and you're not the type of person who wants to hack your device and install third-party ROMs on your own -- a direct-from-Google Nexus device is the only way to go. Other phones(telefonos moviles) and tablets have their strengths, but maintaining the latest and greatest Android moviles tactiles software is generally not one of them.
All of this responsibility should be borne by whom?I think, if consumers can not find a breakthrough, they may not buy the android's account.