Well, who's "you"? 20-25 years ago, "you" (whoever was able to run software, as well as whoever had momentary physical access) got to really control the expens

Well, who's "you"? 20-25 years ago, "you" (whoever was able to run software, as well as whoever had momentary physical access) got to really control the expensive device "you" (the buyer) bought. That wasn't so great for the buyer, and it would have been even worse now. That naïve security model would not do well against today's sophisticated threats. IMO, the android/iphone state is a clear improvement, and we're not going to get another improvement until the people who dislike the current state stop confusing "you" and "you". Only then will we get enough clear thinking on the subject to work out another improvement.