I suspect these reports also have a good 5-10 years lag time from when a language gets popular, early adopters start using & creating libs, and then finally act

I suspect these reports also have a good 5-10 years lag time from when a language gets popular, early adopters start using & creating libs, and then finally actual companies start adopting it. From that point there's a lull of development to get the site up, and then a couple of years later everything finally blossoms and the technology shows up on this chart.