First off, let me say this: I hope that Steve Jobs' health improves, and that he comes out of whatever challenges he's going through in the best of health. He's an amazing, visionary leader of a dynamic company -- and he's also a person with a family. Let's all wish him well.
While famously a CEO, Steve Jobs is also, it should be known, a product strategist par excellence. He's clearly been involved, in a deep way, in the development of Apple's product ideas, product designs, business models, go-to-market strategies, and responses to competition. These are the job responsibilities of product strategists. In his (and Apple's) case, product strategy has risen to the very top of the organization.
Product strategists of two different flavors are wondering how they might be affected by his resignation as CEO (and concomitant request to become chairman):
Product strategists who compete with Apple. Product strategists at companies like Microsoft, Google, Samsung, HP, Dell, HTC, and similar firms wonder if Steve Jobs' change in role might benefit them. They actually shouldn't wonder: His departure from the CEO spot won't benefit them -- not for a very long time, at least. Apple's product development road map stretches into multiple years ahead and has been shaped both by Jobs and by the organization he built. Jobs' departure won't affect Apple's product portfolio, quality, or competitiveness for a long time -- if ever.