Comment by daft_pink

Because there are numerous choke points where people need to use devices to do a thing and those devices can record you and the financial incentives for the companies that own these choke points is so great that they end up selling your data.

Even if Apple truly had perfect privacy you still need to use credit cards, bank accounts, insurance, cell towers, drive a car, etc.

I think that’s the underlying reason why privacy is so hard.