Doesn't it seem that Delany is sort of pushing the B1G into a position by which it can "let slip the (semi-legitimate) bagmen"? As the power 5 conferences acheive NCAA autonomy (for which Delany has advocated), they are in a position to re-write the rules for full cost of attendance, four-year scholarship guarantees, and any other means of player compensation. With autonomy, there's a tacit admission that pure amateurism is kind of a farce, and once every conference is on board with that line of thinking that opens the doors for institutionalized player compensation, which is a way in which a wealthy conferences can compete with SEC bagmen. That's not to say that the bagman system will be eliminated (it may even be strengthened as the arms race escalates), but it possibly puts wealthy B1G programs in a better position to compete for recruits (particularly those faced with an immediate need to provide for families) that might otherwise be lost to the shadowy SEC bagman underworld.
I'm not necessarily endorsing this way of things nor am I sure it will work, but I do think Delany is a mastermind and I can't help but think he sees autonomy as a way of leveraging the B1G's wealth in recruiting.