..Supply if validators consent?
Why should nodes run a change that has no practical benefit? Artificially increasing the supply is basically just debasing a currency, there’s some people who believe such changes could fix security or distribution by ignoring what this basic concept does. This isn’t a new method and happened countless times with any currency almost, and always failed and never benefited the majority of a currency users.
Such a change would probably lead to a hard fork, and the OG Bitcoin would still come out as the better currency with more value. It’s probably impossible that every node would agree to such a change ever, so count it as impossible. That an altcoin will do it one day, is highly likely tho.