The stack from boot-to-emulator can be 100% owned + managed by an organization or individual (and in fact, can be 100% OSS, except for whatever binary blobs are needed). Doesn't have to be crafted from bespoke bytes + bits to count. The important piece is that once this is running, there no one else that can prevent it from operating, except the organization or individual managing it (and perhaps dubious legal powers). Replacement hardware can be obtained. Backups can be made. Redundant power can be managed. The software can be re-installed. And if the unaffiliated OSS developers no longer want to maintain the software, the organization or individual can independently decide, if it is worth it to update the OSS themselves if no hardware or environment can run that.

We don't have to get rid of old working hardware. We should prioritize not being wasteful. And we should prioritize empowering hardware owners to decide for themselves how to maintain & manage their hardware, even if they want to go it alone.