PIF is the Public Investment Fund, the Saudi money backing LIV.
People will assume that the PGAT cratered here but my guess is the PIF has been working this long and hard. They needed an exit strategy here to make their investment profitable. LIV was not getting big crowds, especially in the US market, their TV and streaming numbers were below even low level PGA events (to the point LIV announced they'd stop sharing them).
This might not be a popular opinion but it seems to me PIF realized they had to cut a deal with the PGA and figure out how to make things work. Not that the PGA were complete winners here as they obviously had to change and that change was forced by LIV. And Monahan has some egg on his face with the whole Saudis are bad news schtick he pulled. But cash is king and if Monahan can essentially kill a rival and load up the coffers, he was gonna do it.
The question is where is Norman in all of this? Would be hilarious if the Saudis just cut him out to work with Pelley and Monahan.