Intel's architectures have been massively delayed by process issues. They're still shipping Skylake (Aug 2015) architecture processors on the desktop and server

Intel's architectures have been massively delayed by process issues. They're still shipping Skylake (Aug 2015) architecture processors on the desktop and server because they waited too long to change strategy. About a year ago they announced they're going to start decoupling the microarchitecture from the manufacturing process. 2021 will be show the first fruits of that labor with Rocket Lake, which is Ice Lake (Sept 2019) backported to 14nm. If they had done that at the first sign of manufacturing trouble (2014?) they could have 2 more generations of IPC improvement and still be ahead in every way except efficiency. I guess Intel management was more concerned with not rocking the boat.