Companies that have been doing business in Russia for decades are now streaming out like ants fleeing a disrupted ant hill. Dozens of big-name corporations have announced they will stop sales in Russia, break from joint ventures, or remove themselves from other kinds of business relationships in the country because of the nation’s invasion of neighboring Ukraine. Some made the break immediately. For others, extrication will take some time. The growing list of companies includes retailers, shippers, carmakers, and energy companies, some joining a global effort to shun Russia in disapproval of the attack that began early on Feb. 24 in what President Vladimir Putin had called a “special operation.” Companies from around the world have limited, put on hold, or exited business activities in Russia, or have said they’re considering one of those measures. Some of them had been building their connections, assets, and customer bases there for 30 …