In 1987, Bill Gates became the world’s youngest self-made billionaire, making the Forbes 400 Richest People in America list with a net worth of $1.25 billion, up from a measly $900 million the year before. Gates was just 32 years old and Microsoft Windows was still very much in its infancy, the operating system having been introduced just a couple of years earlier in November 1985. The world of 1987 was an exciting one for Gates and he saw even more exciting things ahead.