"Entreprise" is not limited to Windows. Far, far, far from that. I don't know your background, but in software development (let us exclude plain Website just publishing information), most of it is written for enterprise customers, not private consumers. Excel had around 10 developers years long. I understand cloud is making the difference more blury, but there are just so different needs across different countries, industries, etc - work is in the enterprise. Consumer tools scale, you don't need much people to maintain and develop these.