Which of these tech giants is the better investment in this shifting market?Over the past decade, IBM's (IBM -0.91%) stock price rose 10% while Microsoft's (MSFT -1.64%) stock surged 810%. IBM underperformed Microsoft by such a wide margin because it missed the seismic shift toward public cloud services, struggled to grow its revenue, and prioritized cost-cutting strategies and buybacks over smart investments. Microsoft grew a lot faster by shrewdly expanding its cloud, mobile, and AI ecosystems.Microsoft m ...