WWE didn’t tell the whole story on those contracts. Vince had the option to buy the contracts off Time Warner but felt that what they were being paid wasnt worth it. If he had bought those contracts they would have been contractually obligated to appear on WWE television ASAP. They weren’t even long term contracts, almost all of them expired within the next 6 months.
Booker T opted out of his WCW contract to get beat up by Stone Cold every week for less money
Think about that, Vince threw all of that money into the XFL but wouldn’t pay Goldberg & Sting for 6 months to run the greatest angle of all time.