The article seems to be in response to the recent Gowalla acquisition. If Gowalla had been successful and still used, it may have continued on. Facebook isn't shutting it down because it was a free service. They're shutting it down because it's unpopular and unprofitable. To use the Gowalla acquisition as evidence that companies acquire other companies just to shut them down is silly. All it shows is that a company can be acquired even if they fail.