No, we cover that gap by conducting "top down" analysis on the major international players.
A central team of company analysts breaks down multinationals sales data from global to regional and to national levels. It is a highly valuable phase of the research process when their findings are correlated against the "bottom up" market share totals generated by adding up the country-level share data.
The two approaches help us to fill gaps both in countries we don't research individually and, in countries we do cover, sectors where the big players might have only minor presence. Coming at the question from a range of angles helps to make our regional and global share analysis as good as possible, even within very specific product areas.