And why would YOU think such a hair-brained thing? At one time Apple made a 128K Mac that had more memory that some other basic competitors. After the RAM requirements grew and grew and grew, 8 megs was once considered a lot by any brand.
What happened in the PC/Mac arena was that as RAM prices and HD prices fell, programmers got lazy about making compact code, and there became a run-away need for more and more RAM and bigger and bigger HDs...but who cared? The world was based on desktop computers that plugged into the wall.
Apple is redefining the portable computer market. Not being tied to the old market that was a spin-off of the desktop computer, allows for a lot of new thinking, and this time the software, OS, and the hardware is designed to have a light foot print in both power consumption, and physical weight/size/bulk.
If I were to guess, I suspect that any future capabilities to the iPad, iPhone, and iPod Touch will not be added at the expense of the current battery life of various products. So, the iPad will be expanded and improved over time and the 10 hour battery spec will be held. Same for the iPhone and iPod Touch.
So, if the Mac IIx could run Photoshop on 8 megs of RAM while other apps were also running, why in the world wouldn't 256 Megs be more then able to do the same?
Since Apple controls the doorway to the products, bloatware may not happen for a long long time, if ever... even if memory becomes more dense and cheaper... because this time through battery life and bulk are now the governing specs.
Stop thinking you need to haul around a CRAY computer to get anything done.