Creativity: Why marketing's biggest asset is still its hardest investment to defend

For decades, creativity has been marketed as advertising's ultimate competitive advantage. It is what makes consumers stop scrolling, remember brands, pay a premium and, over time, build loyalty. Yet when budgets tighten and finance teams begin questioning returns, creativity often becomes marketing's most difficult investment to defend.

That contradiction sits at the heart of a new WARC report, based on research by marketing effectiveness consultancy Gain Theory. While 89% of marketing leaders believe their creative has been effective over the past year, 62% admit they cannot quantify its financial value. Nearly one in four says creative budgets have been cut over the past two years because they failed to demonstrate business impact.

The findings expose a deeper challenge than simply measuring campaigns. They reveal an industry that has become increasingly sophisticated in tracking media performance but continues to struggle with proving the commercial contribution of the ideas themselves.

After years of investing in marketing technology, attribution models and performance dashboards, marketers can explain where budgets were spent and how audiences engaged. Explaining how creativity translated into revenue, pricing power or long-term brand growth remains considerably harder.

Measurement Gap 

The report suggests marketers are caught between two realities. On one hand, 81% believe creative and media contribute equally to business outcomes. On the other, only 36% apply the same level of measurement rigour to creative as they do to media. Instead, many continue to rely on proxy metrics such as impressions, reach and engagement—numbers that indicate visibility but say little about commercial effectiveness.

This gap is becoming increasingly difficult to justify as CFOs demand accountability for every marketing rupee. Nearly half of the marketers surveyed say they are not confident defending creative investments before the C-suite, highlighting how the conversation around creativity has shifted from inspiration to investment.

For Nisha Singhania, Co-founder and Managing Partner, Infectious Advertising, the solution lies in redefining what success looks like. Creative should be evaluated against business outcomes—not marketing outputs, she argues. Whether the objective is sales, market share, pricing power, qualified leads or brand equity, success metrics need to be agreed before campaigns begin rather than justified afterwards. The closer creative is linked to commercial KPIs, the easier it becomes to defend investment.

The challenge, however, is structural rather than philosophical. According to the report, 68% of marketers cite inadequate data as the biggest obstacle to measuring creative effectiveness, while 56% point to limited measurement tools. For years, attribution models have largely measured channels, not ideas. Creativity has therefore remained the least quantified part of an increasingly quantified discipline.

Can AI Finally Put a Number on Creativity?

Artificial intelligence is beginning to change that equation. More than half of marketing leaders surveyed say they are already using or piloting AI to evaluate creative performance, signalling a shift from subjective reviews towards evidence-based assessment.

Rather than replacing creative judgement, AI is increasingly being used to identify patterns between messaging, visual execution, audience behaviour and business outcomes—connections that were previously difficult to isolate.

According to Ritesh Bhat, Associate Vice President, Connect Network, advanced analytics are enabling marketers to move beyond traditional metrics like reach and engagement towards outcomes such as consideration, conversions, sales uplift and ROI. By integrating audience intelligence, consumer behaviour and campaign performance into a single framework, AI can give marketers stronger evidence when defending investments before leadership. Yet, he adds, creativity will always retain a human and emotional dimension. The future lies not in replacing imagination but in making it more accountable.

Even so, not everyone believes the industry's growing obsession with measurement is entirely healthy.

Mohit Ghate, CEO of an independent agency, Wit & Chai, argues that advertising risks becoming overly constrained by finance-led thinking. While measurement is necessary, he believes marketers also need the conviction to invest in brand-building ideas whose returns may unfold over years rather than quarters. AI may improve attribution, he says, but it cannot fully capture the cultural resonance or emotional connection that defines truly great creative work.

That tension may ultimately define the next phase of marketing effectiveness. The industry's challenge is no longer convincing marketers that creativity matters; the report makes clear that consensus already exists. The harder task is developing measurement frameworks that satisfy finance teams without reducing creativity to a collection of dashboards and optimisation scores.

As AI becomes more sophisticated, the gap between creative instinct and commercial accountability is likely to narrow. But the most enduring brand ideas have rarely emerged from algorithms alone. In a marketplace where technology is rapidly commoditising execution, creativity may become even more valuable precisely because it remains difficult to replicate—and impossible to measure in its entirety.