The announcement was met with some dismay by AI enthusiasts, taking this as OpenAI going agaist the mission statement of making AI available to all. Elon Musk, who co-founded the company as a non-profit AI research body, was among those annoyed by this.
While the original tweet was deleted, it was straightforward:
This does seem like the opposite of open. OpenAI is essentially captured by Microsoft. — Elon Musk (@elonmusk) September 24, 2020