Mining M&A Buy vs Build: Why $47 Billion in Deals Is Deepening the Supply Deficit

The mining M&A buy vs build debate is no longer theoretical. From January 2024 to mid-2025, the industry closed 18 deals north of CA$1 billion, totalling approximately CA$47 billion. Not on new mines. On existing ones. The logic is rising project costs, permitting uncertainty, and regulatory risk. M&A is faster, cheaper, and more certain than building from scratch.

But every acquisition is one less greenfield project getting funded. Every “buy rather than build” decision defers new supply further into the future. The industry is rationally optimising its way into a structural deficit.

The Scale of Mining M&A Consolidation Since 2024

The numbers are striking. According to analysis published by Dentons and the Canadian Mining Journal, the 18 months from January 2024 to mid-2025 saw mining companies announce or close 18 transactions exceeding CA$1 billion, for a combined value of approximately CA$47 billion. This wave surpasses the post-super-cycle peak of 2011-12 and is on track to set a two-decade record.

Gold dominated, accounting for over US$26.5 billion across 62 deals in 2024 alone, roughly 70% of global mining deal value. But the driver was not commodity optimism. It was strategic urgency: securing future output, cash flow, and critical materials in a world of rising costs and shrinking optionality.

Bain & Company projects M&A value for mining deals greater than US$500 million will rise by 45% for full-year 2025 over 2024. The consolidation is accelerating, not plateauing.

Why Majors Are Choosing Acquisitions Over Greenfield Development

The calculus is straightforward. Building a new mine today means navigating permitting timelines that have doubled in many jurisdictions, capital costs that have inflated 30-50% since 2019, and sovereign risk that can wipe out a project overnight.

Acquiring a producing asset, by contrast, delivers immediate cash flow, known metallurgy, existing infrastructure, and a permitted operation. The risk profile is fundamentally different. The premium paid at acquisition is the cost of certainty.

And it is not just capex avoidance. Sovereign risk is climbing. The Barrick Mining dispute with Mali’s military junta is the clearest example. The government seized the Loulo-Gounkoto gold complex, detained employees, confiscated approximately three metric tons of gold worth around US$245 million, issued arrest warrants for the CEO, and appointed a state administrator. Operations were suspended for over nine months before a settlement of approximately US$430 million was reached in November 2025.

When that is the downside of building in certain jurisdictions, buying an operating asset in a stable one looks like a bargain at almost any multiple.

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The Supply Deficit That M&A Cannot Solve

Here is the problem the market has not fully priced: M&A does not create new supply. It redistributes ownership of existing supply. Every dollar spent acquiring a producing mine is a dollar not spent discovering, developing, and building the next one.

The pipeline of new projects is thinning. Exploration budgets, while recovering, remain below the levels needed to replace depleting reserves at current consumption rates. The critical minerals required for the energy transition, copper in particular, face well-documented supply gaps that acquisitions alone cannot close.

Capital is flowing into the same shrinking pool of producing assets. Prices go up. Multiples expand. The deals get bigger. But the pipeline does not. The supply crunch everyone is worried about is not being solved. It is being priced in.

The non-obvious implication: this environment is structurally bullish for well-run junior explorers and developers with permitted, de-risked projects in stable jurisdictions. They are the acquisition targets. The question is whether they get funded to build, or acquired before they do.

What This Means for Investors and Capital Allocators

For investors in producing miners, the M&A wave supports near-term earnings and valuation multiples. Consolidation reduces competition and increases pricing power. The majors buying assets are, in many cases, the rational actors in the room.

For investors in juniors and developers, the implication is different. If majors will not build, they need to buy. That creates a floor under quality development-stage assets. The premium for a permitted, de-risked project in a tier-one jurisdiction is rising because the alternative, building from scratch, is becoming untenable.

For governments and policymakers, the message is stark. If permitting takes a decade and regulatory uncertainty persists, capital will flow to acquisitions, not new mines. The supply that everyone needs will not materialise through consolidation alone.

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