I doubt any nonprofit credible enough is going to risk damaging their reputation by taking on Freenode after what Lee's done with it. Nearly everyone's already moved to Libera & OFTC, people aren't going to want to move back after all that work, and well, frankly, Freenode's very name is toxic now.

Also, I doubt Lee would ever give up control, because it's clear controlling the network is what he wanted all along.