Ethics presumably

Perhaps something like "to ensure that artificial general intelligence (AGI)—by which we mean highly autonomous systems that outperform humans at most economically valuable work—benefits all of humanity."

The issue here is that the board of the non-profit that is supposedly in charge of OpenAI (and whose interests are presumably aligned with the mission statement of the company) seemingly just lost a power struggle with their for-profit subsidiary who is not supposed to be in charge of OpenAI (and whose interests, including the interests of their employees, are aligned with making as much money as possible). Regardless of whether the board's initial decision that started this power struggle was wise or not, don't you find the outcome a little worrisome?

For some that is important, but more people consider the prevention of an AI monopoly to be more important here. See the original charter and the status quo with Microsoft taking it all.