Their jobs are to instruct. As part of that these other roles developed and became expected.
However, like healthcare, privatization got to a point where the money made a difference more than the research and other roles. This is not a failure of capitalism, business, or anything of that sort; it was just a problem of taking things that were considered important out of the equation, because they were not understood or justified; and we’re allowed to scratch our heads over this and wonder why, but it’s simply that it happened; things sometimes fail.
Should we guard against this?
Probably, yes.
Could it be crowdsourced?
Probably, yes.