Amazon CEO Andy Jassy on Thursday released his annual shareholder letter and once again made the case to Wall Street investors that the company's huge investments in artificial intelligence are worthwhile. "We're not going to be conservative in how we play this — we're investing to be the meaningful leader, and our future business, operating income, and [free cash flow] will be much larger because of it," Jassy wrote. The company disclosed in February that it expects to spend roughly $200