Amazon is on the verge of a massive global rollout of its streaming video service, taking direct aim at rival Netflix (NASDAQ:NFLX). While Prime Video is currently only available in the U.S., U.K., Germany, Austria and Japan, the e-commerce giant is likely to expand it into about 200 countries and territories. The source of the expansion theory – Jeremy Clarkson, the high-profile star of the forthcoming Amazon (NASDAQ:AMZN) show “The Grand Tour.”