[jcranmer]

If I had to speculate: a) Twitter is not obligated to provide this data to Musk (he waived his right to due diligence, after all); b) Musk appears to be trying as hard as he can to wriggle out of the deal, whether by renegotiating to a lower sales price or finding some loophole to extricate himself for the other; and c) there's no real upside to providing the data to Musk.

If this went to court, Musk definitely has the weaker legal position here: he signed a deal that obligates him to buy Twitter at a certain price contingent pretty much only on being able to actually obtain financing, and (despite recent market events), that financing doesn't look hard for him to get.