Comment by Veil on Guide to Beating the Weakling's Tower - Chapter 7

I wonder if everytime someone awakens it means a already awakened person dies that role falls onto a new person and their awakened ability is transfered hence why mc's summoned said there have been summoners b4 him w that ability, but the question now is what killed their previous summoners? cus if they got a sr then they'd be top players but if they have a legendary pull then what could possibly even be the threat here?