Devils advocate: Why should anyone care?
We had Y2k: lots of talk that aircraft would drop out of the sky, that the financial system would crash and burn, that shops would be emptied of food, that utilities would stop working. None of which happened.
Now people are being told that something as small as Microsoft no longer pestering them with updates to some old piece of software - updates they never bother applying, anyway - is a bad thing?
I expect that a lot of individuals won't even be aware that the end is nigh. I expect that a lot of companies simply consider PCs to be a commodity, like chairs or employees and will need to actually see something catch fire before they are willing to consider an abstract concept such as a lack of bug-fixes to be anywhere on their priority list.
On top of that, it's not as if they could just take a PC, apply some "stuff" to it and voila! the problem has gone. No, the hardware will need to be upgraded, possibly the software too - maybe even the peripherals (now many modern PCs have VGA ports, or parallel ports). So given that this lack of "support" won't actually stop anything running, whereas mitigating it will be (a) expensive and (b) disruptive, then sitting with your thumbs up your bum waiting to see what (if anything) happens, is a rational strategy.
That's certainly what I intend to do with the 3 "retired" XP computers that are now just instances that run under VirtualBox, if I need one of their applications, like Photoshop. I'm definitely not planning on spending £££'s upgrading that (legal copy). Or dropping cash on a copy of W7 or 8 to upgrade them, either.