In a world divided between digital haves and have-nots, billionaires Elon Musk and Jeff Bezos are trying to close the gap. The two entrepreneurs separately aim to launch thousands of small satellites to zip around the globe in what’s known as low-Earth orbit, or LEO. Their plan is to offer high-end internet coverage for clients like governments, mining companies and shipping conglomerates, as well as providing it to regions too remote or poor to install it on the ground. Startup costs are in the