Hold on a second. Just to jump into the debate with Kamal. There are a great many corporations with a heck of a lot of employees. Now all of those employees will have a PC and quite a few of them will use a variety of software and such. Inclusive of websites etc. that they have valid memberships and subscriptions for.
It may be that the IT team is too small to support a browser upgrade, it may be that the IT team is too busy to support a browser upgrade, or it may be that they simply cannot predict what sorts of things will go wrong if they do a browser upgrade, finally, it may be that they are using a website which they have become dependent on and it does not support newer browser, and the vendor is unwilling to upgrade.
It's hardly right to try and force the company you are working for to make your life easier, agreed it would be easier, and education isn't something I have a problem with, if they can update by all means encourage them to change, but you cannot force them.
It is not zombie support it is meeting the demand in your market. If everyone were so educated nobody would be building websites because everyone would know what you guys know. As we support the market, eventually the market will be forced to upgrade, as there will be other companies who do upgrade and take advantage of fantastic new sites that arrive, and leave the other companies in their wake. It is the markets demand we bow to, and it is the market that shall eventually make us happy.
Finally, all the browsers are still operating in slightly different fashions and offering slightly different options. Surely they could all get together and instead of moz this and webkit that they could use one standard variable?