The 2% or so MLB players that came from rounds 21 to 40 will likely be missed.
However, I think the comment “we will find you” is more directed to those that have typical projectable intangibles and are not playing in a typical place. If you’re touching 95 mph or higher, you can hit a ball 400FT plus, or you field like Ozzy Smith (dating myself there), somebody is going to hear about you and somebody is going to come watch.
In Hillsboro Texas on a weekday in September at Hill College’s semi-dilapidated (at the time) cracker-box field during scout day the kid hangs a few 97’s. Nobody from Arkansas was present, but Vitello was on the phone later that afternoon with the kid, scheduling an unofficial visit for the upcoming weekend. LSU texted the following week, but he already verbally committed to Arkansas. If you do something noteworthy, I do believe you’ll be found.
I don’t know what the scholarship percentage was, my son made all the arrangements. I paid a bit under $5K for the year at Arkansas, so I guess he did a pretty good job negotiating.