The two US antitrust agencies sided with part of Elon Musk’s argument to block artificial intelligence startup OpenAI from restructuring as a for-profit company.

U.S. antitrust enforcers weighed in on Friday on Elon Musk's lawsuit seeking to block OpenAI's conversion to a public company, pointing out legal doctrines that support his claim that OpenAI and Microsoft engaged in anticompetitive practices.

OpenAI launched a for-profit subsidiary a year later in order to raise outside capital, including more than $13 billion so far from its biggest backer, Microsoft. However, the non-profit entity, along with employees and investors, currently owns that for-profit subsidiary.

His attorney argued they should provide a process for competitive bidding to determine fair market value of OpenAI's charitable assets to 'protect the public's beneficial interest,' as it is working on removing the control of its non-profit,