My (also non-data backed) guess would be it's a generational thing.
When I was a kid in the early 2000's, most web addresses were "www.domain.com", that's what you'd see on written material like advertising or articles. These days if an ad has a web address it usually doesn't include the `www.` subdomain.
When I was a kid in the early 2000's, most web addresses were "www.domain.com", that's what you'd see on written material like advertising or articles. These days if an ad has a web address it usually doesn't include the `www.` subdomain.