The lower-than-expected revenue generated by Alphabet’s (NASDAQ:GOOG, GOOGL) YouTube website could be a warning sign regarding its advertising business in general. Meanwhile, the firm continues to face strong challenges on the regulatory front, and it is going to spend a great deal of money on AI going forward. Given all of these points, I advise investors to sell Alphabet stock at this time.YouTube Miss Could Indicate More Trouble AheadYouTube’s Q2 revenue came in at $8.66 billion, slightly below analysts’ ...