Apple's developer program for the Mac started pretty much at launch. They gave out free software, documentation, and equipment to some, and substantial discount

Apple's developer program for the Mac started pretty much at launch. They gave out free software, documentation, and equipment to some, and substantial discounts to others. They recruited MSFT from the start. MSFT's developer arm has always been central to providing tools and support to developers wanting to build applications for it's operating systems. You don't think both companies realized that an operating system with many available applications was far more valuable than one without?