Value proposition for off-shoring with falling dollar?

I work for an services company that has in excess of 4BN in revenue. It has been growing at a fairly rapid clip of about 40% quarter over quarter.

I often wonder, since most of this growth was the case of "rising tide lifting all boats" With the rapidly falling dollar do lot of the off-shore services company lose their whole value proposition?

How do we position their services any differently than say Accenture/IBM? Has this become a totally commoditised industry where differentiators become intangibles? There is the usual struggle of how to position a given companies services differently...other than the fact of been there done that!