I admire Bill Gates. He's among the best businessmen in history.
What happens because of him is a different matter entirely. 
I cannot agree with you here at all. I believe that all the problems we accuse Microsoft of, including virus propagation, security holes, cross-platform incompatibility, and general instability, were part of his business plan from the beginning.
I can certainly agree that he holds the record for most money ever made, and perhaps even a record for the most convoluted and contradictory business plan. But the web of lies which Microsoft uses to dupe the customer into begging for more anti-customer punishment can hardly be called good business.
Recap - ridiculous monetary success based on lies != good businessman