Sure, but it's still a business decision. On the other side of things, Musk could have complied with the court order, appointed a representative, and accepted that the rep would have their bank accounts frozen and have a pretty bad time of it all. Because Musk might believe being in Brazil is better for his business than not being in Brazil, regardless of any moral/ethical stances he might prefer to take.

Musk could cut off Brazilian Starlink subscribers in the hopes that the backlash would change things in Brazil. But instead he probably thinks keeping those customers on (and happy) for free is the better choice for his business.

I agree with you that altruism exists, but I'm not sure I'm willing to give Musk the benefit of the doubt for many of the decisions he makes.