Domestically too, I know sales people who sell to US financial institutions who remind prospective clients that competitors store their data in US data centres;

Domestically too, I know sales people who sell to US financial institutions who remind prospective clients that competitors store their data in US data centres; thus the institutions' data would be exposed under the Patriot act. It's not just international businesses that have these concerns, any business that serves customers who want their data protected against unreasonable search and seizure have these issues as well.