OpenAI responded to Elon Musk’s lawsuit this week, with a blog post that included emails dating to 2015. We talk about whether the lawsuit could have any impact on the company, and who stands to benefit from it. Then, will the European Union’s Digital Markets Act make the tech industry a more competitive environment for entrepreneurs? We look at how some of the biggest tech giants are changing their services to comply with the law. And finally, Kevin Roose and the Wall Street Journal reporter Joanna Stern compare notes on using the Apple Vision Pro.   Today’s guest:Joanna Stern, Wall Street Journal Personal Tech columnistAdditional Reading:Open AI Says Elon Musk Tried to Merge It With TeslaForced to Change: Tech Giants Bow to Global Onslaught of RulesOne Month With Apple Vision Pro: In the Air, on a Train … in a DrawerWe want to hear from you. Email us at hardfork@nytimes.com. Find “Hard Fork” on YouTube and TikTok.