> I want a world where ...

> I have the skills and desire to do these things.

Please check out my page on the topic https://fabien.benetou.fr/Content/SwappingPartsOfTheRestrict... and let me know if I could improve it somehow to help you.

Overall though my recommendation is :

- do what you can TODAY no matter how small

That means if the OS is too big a of a step, start with an application. If the hardware is too locked down, start with data so that next time you buy hardware, you will bring over that data then switch. Don't postpone.