My doctoral research addresses the limits to international growth that multinational enterprises (MNEs) face, with a particular focus on the role of the home country within a portfolio of international activities. The importance of that market, in combination with several types of home-country uncertainties, may limit the attention devoted by MNE managers to internationalization, evidenced by lower added cultural distance. Similarly, the net growth of an MNE’s country portfolio may be limited by cultural and economic diversity within that portfolio, but it also hinges on how well the MNE is performing relative to its aspirations. In an emerging market context, an ‘upgrading paradox’ seems to apply, as firms face important recombination barriers to growth.