OpenAI expands COO Brad Lightcap's job to include business oversight, as Altman focuses on research / OpenAI plans tectonic shift from nonprofit to for-profit, giving Altman equity / Altigreen in talks with investors for fresh funding / Reddit files publicly for IPO, trumpeting AI deals as revenue source and listing OpenAI's Altman as major shareholder / Altice sells chunk of data centre business to Morgan Stanley