The major D1 programs get the pick of the litter. No doubt. And there will be a lot of scholarships at the major D1's committed this fall. However, these programs may lose a player or two (sometimes as many as three or four) to the draft. Slight possibility of grades taking out a player. Etc. And this can make scholarships available for other players.
But you have to remember, the verbals going on now and the NLI's that will be signed soon are based on performance during the past year. Particularly this past summer.