Without enough instances of people losing support at EOL, consumers won't put a premium on such a brand label and thus I do not see companies willing to pay the premium and contribute the labor needed to complete step 1. By the time that consumers are accustom to the point where they are worried about EOL support, they would likely be looking for systems that are more open, and that is assuming we ever get to the point where consumers care that much (they have notoriously short memories sometimes).
Such a business might have a chance at the point when the cross over from not caring to caring occur.
Such a business might have a chance at the point when the cross over from not caring to caring occur.