Steve Jobs was a pioneer of the funnel business model in the early days of the internet. His vision was that almost any person or company with an interest in information, interaction, or media was a potential participant in the Apple funnel. The top of the Apple funnel was very broad, with devices from desktop computers to iPods. Apple attracted people into the funnel with products that were so intuitive and elegant that they became status symbols. And inside the funnel, the compatible and interconnected nature of the devices, along with a sizable content library, created multiple opportunities for further transactions.
If you're wondering what a sales funnel is, simply imagine a real-world funnel. At the top of that funnel, some substance is poured in, which filters down towards one finite destination. In sales, something similar occurs. At the top, lots of visitors arrive who may enter your funnel. However, unlike the real-world funnel, not all who enter the sales funnel will reemerge out from the other end.