Billionaire Bill Gates is one of the most respected business leaders in the world. Gates co-founded Microsoft and was its CEO through its most rapid growth years in the '80s and '90s as Microsoft came to dominate the market for PC operating systems and productivity software in its Office suite, positions it still enjoys today.Gates stepped down from the leadership post in 2000 and resigned as chairman of the board in 2014. Since then, he has devoted himself to philanthropy through the Bill & Melinda Gates F ...