Elon Musk said that Apple Inc. has cut back its advertising on Twitter Inc. and even threatened to withhold the social network from its app store, suggesting that a fight is brewing between the two companies. Bloomberg's Ed Ludlow reports. Like this video? Subscribe to Bloomberg Technology on YouTube: / @bloombergtechnology Watch the latest full episodes of "Bloomberg Technology" with Emily Chang here: • old..Bloomberg Technology With Emily Chang... Get the latest in tech from Silicon Valley and around the world here: https://www.bloomberg.com/technology Connect with us on... Twitter: / technology Facebook: / bloombergtechnology Instagram: / bloombergbusiness