This is a serious thing that any app maker needs to plan for. Your work can be repurposed as surveillance, and the conditions for that can change in surprising

This is a serious thing that any app maker needs to plan for. Your work can be repurposed as surveillance, and the conditions for that can change in surprising ways. Apple does a pretty good job of taking this into account, minus their iCloud "back door," but they're almost the only big company that does this, and obviously a big part of that is a strategic opposition to both Google and Facebook. I could be wrong, but it seems to me like, after Apple, the only companies who even think about this are relatively small, privacy-focused companies like ProtonMail.