Not every varsity player (in fact most) is college ball material whether it be JUCO, NAIA, D2,D3 or D1.
There are college players who never make a V roster, that may be for a variety of different reasons,
Striving to make the HS varsity roster is very important, I agree. But to make the OP think that once he makes the V roster he can play college baseball is not accurate.
I am not sure if you realize that what you said was interpreted that way, not just by Prepster.