When Linda Yaccarino became CEO of X, the social media company’s owner Elon Musk said the pair would divide responsibilities. But about a year into her tenure at the company she’s learning the pitfalls of sharing power with the billionaire. WSJ reporter Alexa Corse joins host Zoe Thomas to discuss. Plus, the top 100 national-security startups win few government contracts. We’ll explain what that means for companies and the venture-capital backers. Sign up for the WSJ's free Technology newsletter. Learn more about your ad choices. Visit megaphone.fm/adchoices