Reading that article makes me think BU is in good shape for a number of reasons (easy for me to say).
1. There is a LOT of fraud and shady business dealings going on around these activities --serious stuff like agents stealing player's money, and covering it up by moving money around with other clients. There are bribes to government officials. It would seem to me the FBI is most concerned with these headline-grabbing charges, which they investigated and where they have a solid case.
2. The timeline of the field work. From the article: "At the first March 3, 2016, meeting Mr. Dawkins said the good thing about working with assistant coaches like Mr. Evans is that 'the head coach ... ain't willing to [take bribes] 'cause they're making too much money. And it's too risky,' according to the complaint."
Too me, this reinforces that every HC know the game, and they stay out of the line of fire. You hire an assistant because he gets things done and has connections. You don't ask a million questions about how he got them because the profession and the black market issues demand that you don't.
That said, the 4 named Universities are going to be under tremendous pressure to explain how this happened so they can say it won't happen again. In Pitino's case, this was just the straw that broke the camel's back --he's already at high risk of having his NC vacated, and he's made the university look foolish too many times.
The other 3, and any that get named later, will have to weigh the circumstances. How much outrage? How culpable did the HC look? etc.
I can tell you this, though, if I'm an AD, I'm going to tell the president that IF you fire a guy today, the market for coaches is an empty shelf and a discount bin with all the discounts taken off. You can kiss those ticket sales, merchandise sales, and booster money goodbye for a few years.
Obviously, it's hard to say where it all lands, but I could see this being contained to only those cases where the evidence is strong, and not spilling over to those who should have known better, but drew a line in the sand to not actively participate.