Yeah there is no guarantee in the draft, but everyone knows the chance of drafting a phenomenal hall of fame type player is much higher the higher the pick it is. Troy Aikman pick 1. Michael Irvin pick 11. Micah Parsons pick 12 (and the only reason he lasted that long was because of how Penn State had used him and that it came after the 2020 Covid season in which he didn’t play). Randy White 2 overall. John Elway 1 overall. Peyton Manning 1 overall. Barry Sanders 3 overall. Deion Sanders 5 overall.
Nick Bosa for SF 2 overall that helped propel them to the SB the following season and all the success they’ve enjoyed since that draft (also got Deebo and Dre Greenlaw that same draft). Richard Seymour drafted 6 overall by New England and being their best player of those early 2000 SB’s. The Cowboys used their last top 5 pick status to transform the 2016 club. Like you said-the teams need to hit on many of the picks. Lots of the picks that do not work out are forced picks because the team forces them which can happen anywhere a team picks. Detroit was hitting the reset button too much to give them much of a chance. Dan went there with the mission of building a great offensive and defensive line and is now paying major dividends.