The highly industrially diversified
pyramidal structure common to business groups throughout the world permits a
controlling shareholder to stem hold-up problems and coordinate growth across diverse
complementary industries, permitting very rapid growth financed by public equity, a
big push. Further research is clearly needed to test these ideas. If our thesis is valid,
diversification in pyramidal business groups, at least in rapidly growing economies,
should do more than spread risks. These groups should disproportionately contain firms
that would risk hold up problems were they freestanding. Cross-subsidization should
also balance growth across complementary industries, not just enrich controlling
shareholders. In contrast, pure risk sharing implies that groups should contain firms
whose returns are as little correlated as possible.
The highly industrially diversifiedpyramidal structure common to business groups throughout the world permits acontrolling shareholder to stem hold-up problems and coordinate growth across diversecomplementary industries, permitting very rapid growth financed by public equity, abig push. Further research is clearly needed to test these ideas. If our thesis is valid,diversification in pyramidal business groups, at least in rapidly growing economies,should do more than spread risks. These groups should disproportionately contain firmsthat would risk hold up problems were they freestanding. Cross-subsidization shouldalso balance growth across complementary industries, not just enrich controllingshareholders. In contrast, pure risk sharing implies that groups should contain firmswhose returns are as little correlated as possible.
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