The scarcity mindset dominates humanity.
Small example: the new Amazon Kindle e-book reading device has 250MB of memory built in. This carries the operating system, and beyond that, about 200 books.
200 books is surely enough for most purposes. And you can expand it with SD flash cards.
But consider this: if they had included a GigaByte of memory, this would have cost them maybe three dollars more per device (which sells for $400). Perhaps just one dollar, considering bulk rebates. And they'd have been able to say "holds a thousand books" in the marketing campaign. And their buyers would have felt so much richer, holding "a thousand books" in their hand even before loading any content. And he would have been more eager to buy Amazon's e-books because all this empty space was longing to be filled.
So I think it's silly to save those three dollars. Giving customers more than they expect is a great business strategy.