This is because of the business model of Windows. Any company that wants to build and sell computers (aka OEM) can license Windows and use that as the OS of the

This is because of the business model of Windows. Any company that wants to build and sell computers (aka OEM) can license Windows and use that as the OS of their computer. Apple on the other hand is a company that sell computers with their own OS. The OEM approach means that computers companies across the world can cater to the target market in terms of price and availability whereas Apple can never reach that scale across the globe. The end result is more people have access to and can afford computers that run Windows.