Point of information: Your timeline is off.
In the fall of 2022, prior to Colorado, USC, and UCLA leaving,
ESPN supposedly offered the Pac12 $30M per team. Soon thereafter, the Pac12 made a counteroffer of $50M per team, and ESPN decided the figures were simply too far apart and walked away.
This happened BEFORE USC and UCLA announced their intentions to head to the Big10. They announced their intent to leave in December 2023.
This past fall (2023), after no TV deal was presented by a certain date, CU announced their plans to leave. After which,
Apple presented their offer for $23M per school, with an upside for subscription revenue. After which, Washington & Oregon, then Arizona/Arizona State, bailed.
So the Pac12 got an offer for $30M per team when it included Washington, Oregon, USC, UCLA, and Colorado (and the rest of the teams). After USC, UCLA and Colorado bailed, they got a streaming-only offer from Apple of $23M/team.
Which suggests that as
@Augusta_Jacket posted (see below), since the Pac12 with all its "good" teams could only get a lower offer than the ACC currently makes per team, it's not likely the Big12 without Oklahoma and Texas would get a similar deal as the ACC.
I'm pasting the thread below, to jog your memory (and to help everyone else follow along).