Contract violations are more complex than that. You can’t simply void a contract over a little technicality. Even if they had given him the data, he wouldn’t have been able to get out of the contract. So a judge is not going to look at that and say, “oh yeah, Musk was paying $44B for the company and the right to review its data, so unless he gets both he pays nothing.” The judge is going to go, “okay the company is worth nominally $44B and reviewing data is worth zilch in light of the rest of the contract, so these aren’t equal parts.”