After reading TFA I'm actually concerned about the opposite: it seems that Apple will unlock the account for the widow as long as there is a court order, despit

After reading TFA I'm actually concerned about the opposite: it seems that Apple will unlock the account for the widow as long as there is a court order, despite no clear indication of willingness from the deceased (other than the story told by the widow, which, despite being heartfelt, is still a story). These days private communications and stuff are placed under the stewardship of third parties under a false sense of privacy, and often preserved for eternity. I have emails dating all the way back to when I was 18 backed up on Google's servers, for instance, and private notes dating back almost as far. I'm not completely comfortable with the idea of giving my next of kin unfettered access to those. Is there a solution to preserve your privacy post-mortem, other than not using non-E2E encrypted services in the first place, or erasing all unencrypted copies of private materials before leaving this world?