Back when I worked in law, it was the case that the EU had very strict laws regarding where (physically) you store data, and who can access the data.
That meant that EU based firms could only buy our Install-behind-your-firewall version.
Is it the same for the financial district, perhaps?
Working in the finance sector, it's interesting to see a strong divide between US companies that are more than happy to have an external company hold all/most of their data in the cloud and European and Asian financial institutions who insist on hosting everything on site using their IT department, their software and hardware etc.