Some vendors really don't like some other vendors - so much that they're willing to let it get in the way of working with customers. If nobody else is trying something, there's usually a reason. Maybe not a good reason, but a reason. Faster hardware doesn't solve business problems - unless the business problem is slow hardware. The CEO will always think consultants' ideas are good because he's paying good money for them.
Traffic expands to fill the bandwidth provided.
If you take something away from users, they'll sneak it in the back way anyhow. The most powerful influence on CEOs' IT preferences are the people who write for airline in-flight magazines. A year, tops. IT projects advance or die. But if it isn't advancing, it's dying.