Русско-англо-русский юридический словарь

A dominant position can generally be said to exist once a market share to the order of 40% to 45% is reached. (Wikipedia)

Selling below cost is a practice whereby a firm sells products at less than costs of manufacture or purchase in order to drive out competitors and/or to increase market share. This practice may arise partly because of deep pockets or cross-subsidization using profits derived from sale of other products. (OECD Glossary of Statistical Terms)

Companies that adopt a customer-centric approach tend to outperform their competitors in terms of revenue generation and market share. (Forbes)