Also IBM mostly does enterprise software. Microsoft has been successful in many different types of products: video games, operating systems, software developmen

Also IBM mostly does enterprise software. Microsoft has been successful in many different types of products: video games, operating systems, software development (IDEs, programming languages, etc), search engines, office applications (word, excel, etc), just to name a few. I think regardless of how much IBM has made from software compared to Microsoft, it is safe to say Microsoft has been much more successful at delivering products in a whole gamut of industries.