Ok, I know that buyers don't purchase vision, they purchase products. But vision tells you where a company is going, which is important to know when you are going to invest in their products. Through the use of their products (or a competitor's), a company's vision can open up ideas and opportunities that you hadn't thought of. If you think vision is only for analysts and the press, you're missing the boat. The problem with a lot of vision is that it is lifeless and dull, not that it is useless altogether.
When I talked to Avaya, they didn't want to talk about their products or partnerships much. (Well, Aura being a notable exception as the SIP integration point for Avaya's and partner's product lines.) They wanted to talk about what can be done with unified communications that went far beyond video-conferencing. Unified communications is more than voice and video to Avaya, it's a platform with unexplored opportunities.
They described a use-case in a hospital, a pilot project actually, called Code Blue, which ties in with a hospital's location and communications system. When an emergency happens, like a cardiac emergency, rather than everyone running to the room to assist with carts and other equipment, attempts to locate the people with the required skills, proximity and availability to the room, as well as necessary equipment, better ensure a positive outcome. That's a pretty powerful vision.
Now, take that similar case to your business. If you're customer-facing, and you get a customer who is having trouble and is getting frustrated, if you could identify the problem and quickly source the expertise to solve their problem efficiently, what would that do for customer retention and satisfaction? Think about your usual support interactions.