Honestly I see A.C. Milan's ban from any European competition a blessing in disguise. As a Milan fan myself I don't think the Milan team we have now is a perfect fit to compete even in the Europa League. With a considerably new squad and especially new coach I don't think they'll be winning and sweeping their bracket anytime soon. I could say that with over the next three transfer windows and this season Milan might be prepared to face the toughest teams in Europe.
Italian teams don't really pay that much attention to the Europa League and Milan will surely not miss the competition. From a financial point of view it will hurt them a bit but not in a way that will worry anyone considering that the prize fund is significantly lower compared to the UCL.
Another aspect to consider is whether some players might want to leave the club if they are offered a good spot in a team that does play international football, especially the CL!?
I think that ussually just clubs from weak leagues, which don't have much chance to enter the Champions League, see the European league as comforting reward, good surce of income but clubs from top european leagues wants bigger profit and glittering from CL.
Milan anyway, because of the punishment from UEFA, can't play in Europe next season so for them is perfect time now to re build team and start from scratch.
Boban and Maldini will help them to start anew and build again great team.