And at the end of the day, what made you buy that iDevice? Raw hardware? You can buy any old ARM tablet if that's what you want. You probably bought that iDevice because you want the secure device, with a full stack and ecosystem, which includes ongoing work from Apple to provide OS patches for security holes and OS bugs. I don't get the pearl-clutching over the limitations for a fundamentally secure computing appliance by design (which is a major selling point of the device in the first place).
People who buy iOS devices don't control them. Full stop.
Just saying “you don’t control your device” doesn’t make it true, and regardless: the limitations have been a known quantity for a long time, and most people are fine with them. Apple’s secure, locked-down device experience is so popular that we’re complaining about their monopoly.