Well, imagine how pissed I was when Apple basically told me and my 4 month old iPhone 4 I wasn't worthy of Siri. Or turn by turn Navigation. Or that my less than 2 year old iMac couldn't use Airplay. Or that my 18 month old iPod wasn't worthy of iOS7.
It's one thing for a company to abandon people to force them to upgrade if they want the latest and greatest features, it is quite another when a company that manufacturers chips decides to stop updating proprietary software. What do you expect Google to do in this case? There is nothing they legally can do. Of course, if people want KitKat on their Galaxy Nexus, there is nothing from stopping them from sideloading it.
I don't expect Apple or Google to support hardware that is 3 years old, like say the iPhone 3GS or Nexus S. But a phone, PC or tablet less than 1 or 2 years old, I do expect it to get the latest updates. And in that regard both Apple and Google have failed us in the past.
BTW, your comment about Galaxy Nexus not even getting 2 years of support is false. Much like some of the data in that chart above is not very truthful.
Imagine how angry I was when google went from Gingerbread to Jellybean and I couldn't get the update and still had to use task managers. Or how my verizon galaxy nexus was dropped from support. Or the fact that if I'm running jelly bean, I'll never be able to use the new features on kit kat. Or the fact that the android phone that I bought doesn't support google now.