I'm sure its been discussed below, but given that NIL has had a big effect on basketball and football, the effect on baseball is pretty seismic. Before, given the scholarship limitations on baseball, the minors were always a huge competition for talent. College basically got leftovers. But now with NIL, at least for the successful and well funded programs, as BDV points out college is (for a good player) much more attractive than riding buses in the minors for peanuts. Also, it seem true that college is a way to get "found" by MLB way more than it was pre NIL. Almost like college is the new and improved minor leagues (for football and basketball also!, but then college always was the main feeder for them).
The talent level in college baseball has ramped up considerably the last few years with NIL, and very likely will continue to do so for a while.
