Well they could also say why do we need to spend 1.5 billion on new machines when you could just cut back on the stuff that does not make money. Those things do take up space that could be used for index stuff. The index is not that big. It is just text. You don't run out of room storeing text. It does not take up that much room and you can compress the heck out of it. Video and Picures is what takes up space. Google has lost it's way. They have so much money not they feel they have to spend it. They don't need to cache web pages, or store videos, or email. They could get rid of all those and it would not stop the flow of income at all. As a matter of fact it would make them a fortune because they would have to stop paying for the bandwidth. They should focus on making money not making cool toys.