If RU research dollars were so important Rutgers would have been a member long before the formation of the B1G network, it’s not like RU preferred the Big East over everything else. Furthermore on that argument, Nebraska, an academic tomato can, was given an invite before Rutgers.
Nebraska is a large land grant university that also has large grants for research from the government and private enterprises.
They are not on the level of Rutgers or Maryland but they are still top 10% of all universities.
Why wasn't Rutgers invited earlier?
I have no idea but to say that the B1G is looking to drop Maryland and Rutgers is untrue.
Both schools bring a lot to the table.