Key PointsMany investors are enamored with SpaceX's potential in space travel and artificial intelligence.It's internet connectivity, however, which is responsible for the bulk of its business today.These 10 stocks could mint the next wave of millionaires › The growth opportunities in space travel and artificial intelligence (AI) are undoubtedly major reasons investors are bullish on the upcoming SpaceX IPO. Elon Musk, the CEO behind Tesla, is g…