English Premier League have to repay $800MM to NBC for cancelling the last 9 games of the season. English teams are asking their coaches and staff not to get paid. Some teams projected to go bankrupt due to player contract salaries and no TV or game revenue.
If they did, I didn't hear it. But my timeline guess is that if they announced it on Saturday, they already had the servers and network nodes needed (hardware) in house and connected by Saturday. Software and security installed and testing on Sunday, maybe Monday. Network/internet testing on Monday, Tuesday. Hopefully they don't run into any problems but also don't rush into it so they can go live by Wednesday. And that's with IT working 24/7.