Sixty years ago, Samuelson's "Pure Theory of Public Expenditure" expounded the classification of goods, and Bain's "Economies of Scale, Concentration and the Condition of Entry in Twenty Manufacturing Industries" expounded the structure-conduct-performance paradigm. To the present day, rivalry in-and excludability from consumption classify goods, and subadditivity and irreversibility in production classify market structure. Opportunity costs of production in the form of prospective sunk costs incentivise investment and production, and the sunk costs themselves induce subadditivities, specialization and convexity of the marginal rate of technical substitution. Opportunity costs in consumption are determined by the marginal costs of replacement. In light of the recent Nobel price award to Jean Tirole, we revisit some of the forgotten discussions and clarify some of the terminology under a more economic framework of opportunity costs.

This paper focuses on the determinants of wine production in the European wine industry. In the last two decades, the European wine industry has undergone many changes due to the entry of new countries into the world wine market. Although increasing competitiveness became the priority of the European Common Agricultural Policy, wine production and consumption in the EU have decreased in the last two decades, and therefore the aim of this research is to analyse and identify the macroeconomic determinants of wine production, i.e. what factors besides the price influence wine production in selected EU countries and in how they can be controlled. Empirical research was conducted using data for EU member states traditionally engaged in wine production. Panel data on wine production, wine consumption, average wine price, wine imports, wine exports and EU support to the wine sector were collected from secondary sources for 15 wine-producing EU countries and for the period 2009-2018. We estimated the econometric model using pooled OLS, as diagnostic tests indicated that this estimator was the best fit for our data. Our results suggest that domestic demand and domestic (EU) subsidies are the main drivers of wine production. To keep up with New World wine producers, even more emphasis should be placed on promoting the wine drinking culture.

The aim of this research was to provide a better understanding of factors influencing the performance of (small) agricultural producers. Considering the importance of agricultural producers, not just for maintaining a steady supply of products but also for the preservation of the population (and cultural tradition) of rural areas, the development of sustainable agricultural business is a matter of public interest. This paper considers wine producers and their market channels, i.e., the factors influencing the relationship between wine producers and market intermediaries, by applying ideas taken from agency theory. We developed a conceptual model with our defined measure of agency costs as the mediator variable between multiple regressors and the firms’ financial and non-financial performance as regressions. We used the approach of Baron and Kenny to investigate whether agency costs act as a mediator variable. The data needed to test the proposed conceptual model were collected through questionnaires and contextual interviews with the Croatian wine producers (n = 124). We found that more self-reliance in the distribution process, supported by factors related to the bargaining strength, had a positive influence on wine producers’ performance. The results also support the assumption that agency costs act as a full mediator variable between a producer’s attributes and its performance.

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