Woolworths Limited ( ASX: WOW ) will still play a key role in Australia's multi-billion dollar grocery market in 10 years' time, but Metcash Limited ( ASX: MTS ) mightn't be so lucky. That's the view of one leading fund manager, Hamish Douglass, from Magellan Financial Group, who was quoted by The Australian Financial Review as saying Aldi, Woolworths and Coles – owned by Wesfarmers Ltd ( ASX: WES ) – would be the dominant players in the industry over the next decade. Indeed, Metcash is best known for its wholesale connections with independently owned supermarkets such as IGA and Foodworks. The company has struggled with falling volumes as a result of its inability to compete with its larger rivals on price or service. To combat this, a much-needed strategic review has been implemented by the company's management team.