comScore: time spent online on desktop devices declined 9.3% in December, 7.6% in January, 2% in February, and 6% in March compared to the same period last year
Has Desktop Internet Use Peaked? — ComScore data show Internet use from desktop devices has declined year-over-year for four straight months Tweets: @stevesi , @jackmarshall , @ia , @brianrose and @markham Tweets: Steven Sinofsky / @stevesi : Is US desktop Internet use in decline? http://www.wsj.com/... // Impossible to stay flat w/massive mobile growth. http://twitter.com/... Jack Marshall / @jackmarshall : Desktop Internet use may have peaked in 2015 http://www.wsj.com/... via @WSJ http://twitter.com/... iA Inc / @ia : “desktop Internet use might have peaked in 2015.” http://www.wsj.com/... http://twitter.com/... Brian Rose / @brianrose : Meanwhile mobile usage online up 13% to 1 trillion min, or 2X time spent on desktops. Good trend for mobile VR. http://twitter.com/... Markham Nolan / @markham : WSJ, May 2015: Mobile isn't killing desktop: http://blogs.wsj.com/... WSJ, Apr 2016: Desktop peaked in May 2015: http://www.wsj.com/...
Context & Ripple Effects
A year ago, the Journal's own coverage argued there was no story: mobile web traffic was framed as additive to desktop, which was 'not in decline.' The new comScore numbers break that framing — four consecutive months of year-over-year declines in desktop time spent (−9.3%, −7.6%, −2%, −6%), against mobile usage up 13% to roughly one trillion minutes, about double desktop.
The arithmetic is what makes this an inflection rather than noise: as Steven Sinofsky put it in the surrounding discussion, with mobile growing massively it is 'impossible to stay flat' on desktop — so the question shifts from whether desktop peaked to how fast the ad and publishing economy built around it reprices.
First-order effects
- Publishers and advertisers with desktop-weighted inventory face a shrinking measured audience for the first time in the comScore series, forcing immediate rebalancing of buys toward mobile where attention is now concentrated.
Second-order effects
- Measurement itself gets contested: comScore's panel-based desktop numbers become the reference point every publisher disputes or discounts, while mobile-first properties gain pricing leverage in ad negotiations.
- The economics of a mobile visit diverge from desktop — later Adobe Analytics data showed smartphone users spending 10% less time per website visit since 2015 while spending 27% more money per visit — so monetization migrates from session length to conversion.
Third-order effects
- If the pattern holds, desktop settles into a work-and-production device rather than a consumption screen — a split later visible when IDC counted desktop shipments rising 7% in 2021 even as leisure browsing stayed mobile-first, decoupling hardware demand from attention share.
- Attention aggregates toward a smaller set of dominant destinations: by 2019, traffic to the top 100 sites was up 8% driven entirely by mobile, suggesting the desktop-to-mobile handoff accelerates consolidation rather than spreading engagement evenly.
The trend: Internet attention is completing its migration from desktop to mobile, converting desktop from the default screen into a residual one and shifting ad pricing, measurement, and site economics along with it.