> they decide what features are prioritized
this is not true; the other comment is wrong. there is no central body at all that "decides" what features are prioritized. features are simply worked on by whomever has the capacity, ability, and desire to do so.
many engineers at JuliaHub have all three of the capacity, ability, and desire to work on certain features because JuliaHub, in its capacity as a private business, pays them to do so. but with respect to Julia the programming language these are "just" third party contributions like any other.