Silo approach never left, each group deals separately with its own business, but there is no pro-active collaboration of knowledge between silos.
Lack of single point of knowledge owner cause each Silo to create it's own "knowledge" for the same processes.
Though it's a multi nation company, there is still expectation that everyone will act according to the US culture, and in some cases being pro-active and trying to promote issues that impact your work with the relevant stakeholder, is being perceived as stepping out of your jurisdiction, and instead of taking it with you, it is usually escalated to your managers, hence many people do not try to challenge and be pro-active (rather they are just doing what they were told).