Everything trickles down. Team USA had some guys decline invitations. The fall off in the Cape has been drastic and it happened fast. Guys who would have never been invited in years past are not just playing, they are doing well. The pitchers didn't show up. The SEC arms stayed home for the most part.
I think at the top schools, the solution is going to be creating your own version of driveline, tread, etc. Players will stay home in the Summer and train. The pitchers that need reps will throw live AB's to the hitters and it is a win/win for everyone. If you are trying to play at one of the top 25 schools, it does you no good to face pitching during the Summer that is two levels below what you see in conference.
While I said Summer ball will be dead soon, that was too dramatic. There will always be a need, but there needs to be some contraction. It is still important for guys in the portal, guys coming off injury or guys who need reps. Plus, Northwoods is a fun league. Not everyone is training for the MLB or trying to be an SEC starter. Some just love the game and a league like Northwoods will always appeal to those players.