Changes have nothing to do with age bands. Has to do with control of talent and getting more out that talent. This isnt speculation, going to happen. We will get less people on the boards being proud "DA" parents who were DA only because they were paying to be on teams with said title.
I don't know if this is what you are hearing, but one rumor is that the MLS clubs will have their own DA league (presumably just a boys league at this point). If so, it will be harder for second-tier pay-to-play DA clubs to keep their talent.