He won't be remembered for that also because he inherited a monopoly company. But he should be remembered for transforming Microsoft into an enterprise software company, which will extend its monopoly status there for a long time, as long as the mediocre class of IT workforce remains, which is probably going to be a very long time.
He is not good at making technology innovation decisions, everybody knows that, especially himself. That as a given, he set out to make the best business strategic decisions for the company. How did it go? It might be easier to tell when Tim Cook reaches his 10 year anniversary taking over Apple.