March, he called the platform “the enemy of the people along with a lot of the media,” in an interview on CNBC’s “Squawk Box.” Now that Trump is heading back to the White House and has been cozying up with Musk, the rest of the tech sector seems keen on currying favor. Apple CEO Tim Cook, Microsoft CEO Satya Nadella, Google CEO Sundar Pichai and others all publicly congratulated Trump following his victory in November. Microsoft declined to comment on whether it’s contributing to the inauguration. Representatives from Apple and Google didn’t immediately respond to CNBC’s requests for comment. For OpenAI and Altman, the concerns are a bit different. Altman and Musk were co-founders of OpenAI, which initially was a nonprofit. The two have since publicly split, with Altman remaining as CEO of OpenAI and Musk starting a rival artificial intelligence company called xAI. In March, Musk sued OpenAI — and co-founders Altman and Greg Brockman — alleging breach of contract and fiduciary duty. He claimed the project had been transformed into a for-profit entity that’s largely controlled by principal shareholder Microsoft, and is suing to thwart the change in structure. OpenAI clapped back on Friday, claiming in a blog post titled “Elon Musk wanted an OpenAI for-profit,” that in 2017 Musk “not only wanted, but actually created, a for-profit” to serve as the company’s proposed new structure. Altman’s coming concern is that Musk spent more than $250 million to help boost Trump’s campaign, and is now poised to help lead the “Department of Government Efficiency.” In that role, Musk could influence how AI is regulated in ways that favor his businesses. On Dec. 5, Trump announced that venture investor and podcaster David Sacks, a friend of Musk’s, will join the Trump administration as the “White House A.I. & Crypto Czar.” WATCH: Trump’s Cabinet will have more billionaires than