Watch all Cannes Winners 2026 cases and analysis

    Stopping at maximum total ROI leaves growth unbought

    PrincipleBrand Strategy

    Stopping at maximum total ROI leaves growth unbought

    Response curves are S-shaped, so the point of maximum marginal ROI comes early and the point of maximum total ROI comes later. Stopping investment at maximum total ROI often leaves substantial value on the table: as long as returns exceed the business's acceptable profitability threshold, additional investment keeps improving overall returns.

    Source

    The Effectiveness Equation - Google Market Insights EMEA, with Kantar, Nielsen, Ekimetrics, Ipsos MMA, the Behavioural Architects and WARC (2025)

    Michal Protasiuk, Ahmet Bas, Jonas Christensen, Vanessa Bruns, Emily Allen and Jonny Protheroe (Google Market Insights, EMEA)

    Figure 05, p. 23-24, The Effectiveness Equation (2025)

    Go to the original