That's goes for many manufacturers. The computer and cell phone industries are fast-moving industries, and there's always going to be newer and better hardware the moment you buy something. Also, it's not a fact that all Apple products are made for about 12 months and get improved. Case in point--the iPhone 4.
You wanna look Android products getting outdated? I have the Samung Epic 4G. The new Samung Epic 4g Touch is rumored to come out in October. That's a little more than a year, yeah, but I'm still running on Froyo, while plenty of other devices are already running on Gingerbread
AND some devices are already getting the Ice Cream Sandwich update later
this year. And no I don't root because if my phone bricks (like it has twice for me when rooted), it voids the warranty. Like you said, it's tough times, so I'm not gonna void that warranty when I should be getting this update like everyone else is and has. In case you can't tell, I'm a little peeved by that
Anyway, the iPad 2 16gb Wi-Fi is a hundred dollars more than 16GB Acer or Asus tablets. I don't know the OP's financial situation, but if he's considering buying an iPad 2, is it really all that more expensive that we have to seriously consider the state of the economy? Aside from that, if you can justify the $100 price difference between two completely different products, then I'd like to hear it.