how to remedy the situation

In the right-to-repair/operate side of things, those with certain skills could make alternate 3D parts available to be machined. 3D scan stuff, use CAD to make part models to be shared.

Or reverse-engineer the computers in order to provide alternate operating systems.

If you don't have skills, but there are those who do, people could support them financially.

"Open hardware" is a path forward for this. Search the term for more information.

how to remedy the situation

In the right-to-repair/operate side of things, those with certain skills could make alternate 3D parts available to be machined. 3D scan stuff, use CAD to make part models to be shared.

Or reverse-engineer the computers in order to provide alternate operating systems.

If you don't have skills, but there are those who do, people could support them financially.

Open hardware is a path forward for this.