I agree. For a 4th round pick, I’d say Gabe Davis generally was worth that pick or better, for the four years he was with us. But when time was up, another team was able and willing to pay him more for his services than the Bills. WRs are getting paid big-time in the league right now.
Plus, it’s also possible more WRs are out of the league after a few years than OL, given speed is a bigger part of a WR’s game while things like strength are bigger part of an O-lineman’s game. This would mean teams should be drafting WRs more regularly, and not necessarily re-signing them.