The CEOs of Nokia and Alcatel-Lucent, Rajeev Suri and Michel Combes, have both inherited companies which have gone through difficult mergers, strings of losses, and several rounds of reorganization. Both CEOs are starting to deliver results from their own restructuring plans – which investors fervently hope will be the last for a long time. But the cost reductions continue, as do the question marks over whether, once there is nothing left to cut, these firms will have paths to sustainable profit and organic growth. Meanwhile, Ericsson’s CEO Hans Vestberg is facing the opposite pattern, having taken over a company, in 2010, which was performing solidly and already had its new directions largely mapped out – but which is now having…