Anthropic would probably not renegotiate in a year about the principles, while Sam Altman is known to be morally flexible so OpenAI will almost surely allow the military to do what they want in the future. Sam Altman might even have said behind closed doors that these restrictions will be removed once the drama has died down.
What principals do Anthropic have?, they happily build a product and acknowledge it will lead to the loss of millions of jobs, particularly SWE's first, but shrug and say 'nothing we can do, we just build the thing', that will kill a lot of people.