Your last statement is indeed the phenomenon I was intending to describe. However access to the internet (and tools) has gone to the wealthy and educated first

Your last statement is indeed the phenomenon I was intending to describe. However access to the internet (and tools) has gone to the wealthy and educated first, who tend to have higher IQ (as measurable by most tests) than the poor and uneducated. Hence adoption of new browser technology is often among the cognitive elite (for access reasons) and penetration toward the masses (average IQ) depends on the overall appeal and not just a small fad among those with early access.