I don’t know nostr:npub1sg6plzptd64u62a878hep2kev88swjh3tw00gjsfl8f237lmu63q0uf63m’s motivations but my guess is that he was stuck between a rock and a hard place. If he suspended Trump then shareholders would revolt and remove him as CEO. If kept him then users are upset, but he’d be able to keep running twitter and not have it taken over by hedge funds and activist investors.
Once January 6th happened, a bunch of other sites started suspending Trump and the decision much easier. I don not envy anyone who had to balance those interests.