Re: Who invented it?
"There's very little they actually invented"
Not strictly true. Most of MS's big money making products were bought from elsewhere (more or less all of office, big chunks of Windows, MSDoS...), but MS's research department is by far and away the biggest player in computer science in the world, and a lot of what they make gets adopted for use on license by everyone else. Hence why MS make more money off Android than Google do - even if you discount the stuff looted form Nokia, many of the software-side patents used in mobile phones were from MS original research which they themselves spectacularly failed to develop into a decent product.