The phrase "corners the market" refers to a business strategy in which a company or individual becomes the sole provider or dominant force in a particular market or industry, leading to limited competition and high prices. The antonyms for this phrase would include "shares the market," "divides the market," and "competes in the market." Sharing the market refers to a strategy where multiple companies or individuals offer their products and services in the same market or industry. Dividing the market suggests a more collaborative approach, where different parties play to their strengths to create a competitive market. Lastly, competing in the market involves healthy competition, where companies or individuals work to earn a share of the market based on the merits of their products or services.