(I believe you have the the wrong history. The D&RGW holding company (Anschutz) purchased SP after the SP/AT&SF merger fell through. The merged companies took the SP name with a D&RGW speed modification.
The SP/D&RGW holding company purchased UP and the merged companies took the UP name.)
This is correct with the exception of UP being purchased by SP. SP lost money under Anschutz, $66 million in 1989, then $35 million, and the $78 million. SP was kept afloat by Anschutz selling appoximately $1.2 billion of its California real estate. UP then started "wooing" SP for a UP-SP merger. What money changed hands came from UP, with Anschutz receiving $1.5 billion for the 26 percent SP stock he owned.
The D&RGW/SP was sold to the UP for $5.4 billion.