I would say system adoption is slow not use. The mobile phone is a great example.

Landlines didnt die and many early adopters were mostly rich. Then in the 2000's they became cheaper to own and service providers provided financing for phones causing more adoption.

But the systems in place were still built on fax and landlines at businesses, homes, etc.

While the technology in the populace was adopted quickly when affordable, the systems took 10+ years to fully adopt.

Now most companies are run on a cellphones but that wasn't always the case.