These would be importers and distributors but the writer probably wants to refer to the entire chain of business people in the importing country. When I had a little wine shop more than 15 years ago in the US, I had to pay 50% down almost 6 months in advance for some of the European wines I wanted (when it hadn't yet all been bottled and shipped) based a few tasting bottles. Obviously the distributer, and in turn the importer (in some cases the same company) had to pay the same stake and take the same risk that the wine would travel well. Examples: #
An educational program is needed to inform industry members and stakeholders and partners of the essential value of clean vine materials, importation ...
www.practicalwinery.com/.../janfeb06p115.htm - En caché - Similares;
Thierrys - The best independent route to market for wine companies
UK wine importer and wholesale distributor of fine wines from across the world, ... importers in the UK, importing wines from 12 countries across the globe. ... to deliver long term growth and value to the business and its stakeholders. ...
www.thierrys.co.uk/ - En caché - Similares; #
22 Jun 2006 ... liberalised, with EU wine import duty at low levels. ..... the economic welfare of wine sector stakeholders in the future and in preserving ...
ec.europa.eu/agriculture/capreform/wine/com2006_319_en.pdf - Similares;
Oil prices change the face of wine logistics - Wine Business ...
“Kuehne + Nagel moves import containers of wine by rail wherever and whenever ... The project stakeholders and duration of the second phase of the trial ...
www.wine-business-international.com/156-bWVtb2lyX2lkPTM1NCZ... - En caché;

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Note added at 7 hrs (2010-07-19 07:05:41 GMT)
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After rereading this and the other answers I see why Emma has offered "share": it fits with the sentence but I can't find a justification for the translation of compartidor as "share" or "market share". How about "stakeholder spread" as a 50/50 compromise?