RE: Licence to Drive : Sebastian Vettel to Aston Martin F1 from 2021 and beyond

Don't feel sorry for Perez as he receives $20 Million for stepping a side.There are a few options open for him as Red Bull will be getting rid of Alex Albon. Williams or Haas could also take him and expect him to have a seat somewhere.
If Perez didn't have sponsors backing him he wouldn't get a seat as Hulkenberg is also expected to get a seat somewhere next season. Racing Point will change names and will turn green as the new owners are Aston Martin.