Not at all. It may have looked like that in the beginning, but it looks nothing like that now. If that were the reason:
Why would they take this huge decision extremely suddenly?
Why would they announce it without first consulting with the president of the board?
Why would they claim that Sam Altman had been lying to the board in the official announcement?
Why would they announce some very weak reasons for that claim of lying to employees, and nothing to anyone outside the company?
Why would they immediately start negotiations to bring Sam back?
Why would they hire a new CEO that then says he is very much for commercialization, and that commercialization was not the reason for firing Sam?
Why would they start a new round of negotiation to bring Sam back?
Why would one of the four members of the board who took this turn decide to undo it and become an advocate for bringing Sam back?
The whole thing makes no sense at all if the motivation was disagreements over commercialization of their tech - something that has already happened months ago.