Every computer is a #TuringComplete, universal #VonNeumannMachine, which means that it can run every valid program. There is no way to get a computer to be *almost* Turing Complete, only capable of running programs that don't upset your shareholders' fragile emotional state.
There is no such thing as a printer that will only run the "reject third-party ink" program. There is no such thing as a phone that will only run the "reject third-party apps" program.
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