“...or perhaps Michelle Obama could step in as quarterback for the Steelers this weekend...”
One of these things is not like that other! You were listing a bunch of patently absurd employment choices, like Michael Jordan doing open-heart surgery—and then you stuck this one in.
When the less capable are paid the same as the more capable, there will be a revolt. It will come in the form of the more capable seeking different employment that recognizes the greater capability. Alternatively, the more capable parties could choose to limit their services to the lowest common denominator at the same pay grade. Either way, it won't go unanswered.