Where is the proof that drafting a QB every year means you'll eventually hit?
The Browns since 2000 have drafted something like 8 QBs, the Bills have drafted 3. Neither is closer to finding the answer.
The scouting process has gotten much much better at identifying talent. There are exactly 2 QBs who start in the NFL and are good that were picked out of the top 2 rounds. Everyone loves to use the Brady reference, but that situation is extremely rare. Of the starting QBs in the NFL, right now, 24 are first round picks. That's 2/3 of the league. Add in the 2nd rounders and that number climbs even higher. The over whelming majority of Qbs starting in the NFL right now are in the first 2 rounds and I don't think that's coincidence.