the bulk of revenues and profits come from other divisions. It operates ports in 78 countries on six continents including London Gateway and Southampton
Obvs not going to defend p&o's actions, but yeah they're not really connected. Except possibly if this P&O is reflective of their overall business practices. But that's not discussed.
I guess the idea is that they had the capacity to continue to support a loss making business.
The Guardian burying the lede somewhat