“When two of the four mega-companies in the residential real estate market merge, one worries that they will increasingly use their clout fo disadvantage smaller competitors, effectively limiting consumer choice,” Brobeck said in a statement to Inman. By unifying home search, buying, selling, mortgage, title and servicing, Rocket executives claim they’ll be able to cut consumer transaction costs by half, to $20,000. While Compass and Anywhere’s boards of directors have signed off on a merger, the deal remains subject to approval by shareholders in both companies. But Compass shareholders saw the value of their shares tumble by 16 percent. Assuming the deal closes, Compass plans to continue operating Anywhere’s company-owned brokerage brands — Coldwell Banker, Sotheby’s International Real Estate and Corcoran — and franchise brands Better Homes and Gardens Real Estate, CENTURY 21, Coldwell Banker, Corcoran, and ERA.