What should be "CORE" and What should be NOT.The most profitable parts of the buisness should be CORE... THE WINNERS.
NON-CORE...The most unprofitable parts of the business.... The Losers
What do you want to do???? Make CORE up with Losers....and then waste capital (CaxEx) expanding them??????
Why waste resources on losers instead of winners?????
All just my opinion/view/thinking