Greed.
Can't upgrade the memory either unless you get a 27" model. And only then do you get a 7200RPM hard drive.
The only reason there is no 7200 RPM drive in the 21.5 inch is so Apple can save money and charge you more. There are 2.5 inch 7200 RPM hard drives in plentiful supply, but the 5400 RPM's are cheaper.
And the only reason you can't upgrade the memory on those new 21.5's is because Apple wants more of your money. How DARE you circumvent their highway robbery-esque memory module upgrade prices all these years!! How DARE you pay HALF for a bump from 4 GB to 8GB by buying memory modules from a 3rd party!!! We'll fix that: solder it to the board. Charge highway robbery-esque prices for a bump from 4 to 8GB of dirt-cheap DDR3 RAM. Profit.
Can't upgrade the memory either unless you get a 27" model. And only then do you get a 7200RPM hard drive.
The only reason there is no 7200 RPM drive in the 21.5 inch is so Apple can save money and charge you more. There are 2.5 inch 7200 RPM hard drives in plentiful supply, but the 5400 RPM's are cheaper.
And the only reason you can't upgrade the memory on those new 21.5's is because Apple wants more of your money. How DARE you circumvent their highway robbery-esque memory module upgrade prices all these years!! How DARE you pay HALF for a bump from 4 GB to 8GB by buying memory modules from a 3rd party!!! We'll fix that: solder it to the board. Charge highway robbery-esque prices for a bump from 4 to 8GB of dirt-cheap DDR3 RAM. Profit.