Intel hasn't been "doing nothing" for years, its CPU architecture people are two generations ahead of what Intel is currently able to manufacture and with the 7nm delays, it looks like Intel will be held back by process tech for a while longer.If they don't come out with something akin to the Nehalem in the Athlon 64 age pretty soon the hole they have dug will be their grave.
Whenever they sort out their 7nm issue, they should be ready to roll out CPUs based on Golden Cove and likely make up whatever ground they may have lost to Zen 4.