Out of the box, you own the hardware, not the software. Smartphones can be repaired by third parties, but it'll void your warranty. As a faulty repair (e.g., screen replacement) has the potential to negatively affect the software (e.g., sensors), I'd agree that if you want to retain warranty coverage, get it fixed by the manufacturer.
"We just do as we're told and let others tell us what we can and can't do with our stuff."
I think what has really happened is that it is in many cases not really "our stuff" even though we like to think that it actually is.
If you have a plain old percolator you can just buy any coffee you like. If you spring for a Keurig 2.0 you pretty much are supposed to use their k-cups (yes, there are hacks). Presumably, you are not actually buying a coffee machine with the Keurig 2.0 but buying into a proprietary "coffee experience."
I have no idea how to "fix" this--the choice seems to be to accept the way things are or opt out of the modern world more and more things require you to rely on the manufacturer and its preferred "partners" to either use the item or obtain any service.