will Wii demo's increase sales

[routsounmanman]

bmmb1 said:

highwaystar101 said:
Of course it will increase sales, the real question is will increase sales enough to warrant the cost? I think it will. But the results have yet to be seen.

What costs are there ? (I'm asking, this is not a statement). I would think that from the programming side, all the developers need to do is enter a section of the game with a fixed save file, and cut out from the code the possiblity to proceed beyond a certain point. Not trivial, but not a huge task either and so not expensive  (?)  What else?

And pave a road for pirates to walk on while they're at it.