I hope that any switch to ARM retains a degree of the flexibility available with the PC but it's important to recognise that
1. x86 probably isn't going away anytime soon and
2. the PC world has come with its own set of constraints - notably being locked-in to (to all practical purposes) a duopoly of CPU manufacturers with the resultant impact on pricing and customer choice.
Yeah but the duopoly is at least committed to opensource for most of its components. I can download opensource drivers for the GPUs (provided by Intel and AMD) and network components (Intel) as well as most-if-not all of the components on my current motherboard.
1. x86 probably isn't going away anytime soon and
2. the PC world has come with its own set of constraints - notably being locked-in to (to all practical purposes) a duopoly of CPU manufacturers with the resultant impact on pricing and customer choice.