iRobot (IRBT -4.60%) is back to bumping along a path all by itself. The proposed Amazon acquisition failed its regulatory review, so investors again find themselves evaluating the robotic device specialist's prospects for finding its own growth opportunities. Those prospects don't seem great. In late February, iRobot reported significant 2023 losses and projected another difficult year ahead for sales and earnings. But with the stock currently at an all-time low valuation, is it time to consider starting a ...