The US firm now dominates the other practice areas and the American implants sent to run the overseas operations have very limited local knowledge and cultural awareness. This means that decisions are often made out of ignorance of how markets and legislation operate in local theaters. I hear frustration from EY people that the rules are:
The American way is the right way
The American way is the only way.
It works in The States so it must work here.
Guys - the prices in Europe are not in USDollars, we have our own laws and customs - and so do our clients! Local customs prevail and the loss of clients in the local marketplace is down to the cultural schism between the unelected US leadership and the local staff and partners. The US leaders are just visiting and have no real interest in the values and long term performance of the European firms.