Gibson Sotheby's International Realty has acquired Atlantic Bay Sotheby's International Realty in Provincetown, a move that allows the Boston-based luxury residential brokerage to expand its presence to the Outer Cape. The move comes as other brokerages seek footholds on the Cape and Islands. And as the Business Journal has reported, the coronavirus pandemic has many renters and buyers exploring Cape Cod real estate now that they no longer have a daily commute into the city. Atlantic Bay Sotheby's...