Key PointsAmazon is planning to spend $200 billion on AI infrastructure this year.AWS sales in the first quarter were up 28% from a year ago.The annual revenue run rate of Amazon's custom chip business exceeds $20 billion.These 10 stocks could mint the next wave of millionaires › The roller-coaster ride of Space Exploration Technologies (NASDAQ: SPCX) is in a valley -- and it probably won't be the last of them. Less than a month after its record…