> a trustless manner automatically and the ability to execute computer programs that are deterministic, immutable, and will run forever.

Let's try to think quite ahead, going sci-fi even:

Maybe the only use case for such programs is valid if they are powerful AIs, or uploaded human minds. But for the blockchain to be able to run that? The compute and memory needed is astronomical. It also means that blockchain will be relevant technology only in the 22nd century and now we are just playing with it for no actual value whatsoever.

Because, how else would I ensure that my uploaded mind from year 2060 henceforth runs forever in the cloud? I can't, the 22nd century equivalent AWS may be shutdown. Solution - blockchain...