It will be very difficult to unwind. Years ago it was natural for electronic devices such as mobile phones to have a replaceable battery. Then a popular brand decided to make the battery irreplaceable by the consumer and the rest followed. The justification was the need to make thinner devices is far more important. Now user replaceable batteries are a rare thing in last generation devices, even in laptops! So call me skeptical if after a decade or so they will all go back to what we had before, when one could upgrade a HDD or memory in a typical laptop in a couple of minutes, and business models were even more easy to service.