Big Four Consulting Firms Face AI Competition from Smaller Firms: Former EY UK Boss

The Big Four accounting firms face competition from smaller AI-focused firms, according to Hywel Ball, former EY UK boss. Ball emphasizes the importance of consulting firms' own AI efforts, citing his recent board roles at two start-ups. The trend suggests a shift in the industry towards AI-driven services.

The accounting industry is witnessing a significant shift as smaller AI-focused firms challenge the dominance of the traditional "Big Four" accounting firms. This trend, highlighted by Hywel Ball, former EY UK boss, underscores the growing importance of AI-driven services in the consulting sector.

Ball, who has recently served on the boards of two startups, emphasizes the need for consulting firms to invest in their own AI capabilities. This shift is evident in the increasing demand for AI-related services, as seen in Palantir Technologies' recent revenue projections [1]. The company, which provides data analytics and defense software, has seen a 4% increase in its shares and a more than doubling of its worth this year, largely due to the growing interest in AI technology and government investments in defense technologies.

The global mergers and acquisitions (M&A) market is also reflecting this trend. In the first seven months of 2025, global dealmaking reached a $2.6 trillion peak, driven primarily by AI-related transactions and corporate growth strategies [2]. The technology sector captured $478 billion in deal volume, representing 24% of global activity. Notable transactions include OpenAI's $40 billion funding round and Scale AI's $14.3 billion investment from Meta Platforms.

The increasing importance of AI in corporate strategies is also evident in the regional dynamics and sector shifts. While healthcare drove M&A activity post-pandemic, the computer and electronics industry has now taken the lead in the US and UK markets [2]. This shift highlights the growing importance of technology and AI in driving corporate strategies.

Despite initial hesitations due to geopolitical uncertainties and trade tariffs, corporate boardrooms are showing renewed confidence in pursuing growth through M&A. Companies are adapting to the volatile environment by accelerating AI adoption as part of their mitigation strategy [2].

As companies continue to navigate uncertainties, the M&A landscape is expected to evolve, with AI and technology remaining key drivers of growth and strategic realignment in the global business environment.

References:
[1] https://www.ceoinsightsasia.com/news/palantir-lifts-annual-revenue-forecast-again-as-ai-demand-accelerates-nwid-13801.html
[2] https://theoutpost.ai/news-story/global-m-and-a-hits-2-6-trillion-peak-fueled-by-ai-boom-and-corporate-growth-strategies-18650/