They have certainly lost a lot of customers, not so sure about people power but would like to think so.
Whatever reversed the decision the bottom line profit figure I reckon would be the deciding factor.
Yes, the loss they have quoted is +£1bn , almost missed the cornflake bowl with the buckie I was that upset
BTW, the savings they made by switching from PP to PZ would have been negated by the loss of customers also. Much easier to find a PP outlet than a PZ