Most/all software that Ubuntu gets from others are released under permissive licenses that explicitly permits reselling of the software. So no, there should be

Most/all software that Ubuntu gets from others are released under permissive licenses that explicitly permits reselling of the software. So no, there should be no expectation of money to Jack John Johnson for his freely (as in both beer and freedom) contributed software. I would assume, were Canonical to start selling Ubuntu, that some part of the profits would find its way upstream.