Not much has gone right for Walgreens Boots Alliance in the past decade. 

Customers bought more and more household items online at sites such as Amazon.com, instead of Walgreens’s more than 8,000 stores across the U.S. The pharmacy chain inked deals with other drug suppliers and doctors offices, but stood pat while rivals, including CVS and Express Scripts, merged with big health insurers, gaining control of the medical-reimbursement purse strings that were squeezing pharmacies.