If we're discussing this from a "best interest" standpoint, then the studio is no longer obtaining revenue if it's being asked to delete all the content of a sp

If we're discussing this from a "best interest" standpoint, then the studio is no longer obtaining revenue if it's being asked to delete all the content of a specific person on its own sites and thus any obligations of keeping content out of reach from other service providers cease. It's not in the studio's best interests to spend money litigating or issuing DMCA notices on behalf of a former associate.