Mark Carney's proposed C$25 billion Canada Strong Fund has reignited a fundamental debate about the role of government in shaping industrial capacity. The question is blunt: when should Ottawa finance productive capacity, and when should markets decide winners and losers?

Carney's industrial policy framework envisions federal intervention in capital formation at a scale that requires borrowed money. The Canada Strong Fund would operate as an investment vehicle capitalized by government borrowing, positioning the state as an active selector of sectors and companies worthy of support. This approach departs from market-driven allocation, where private capital flows to ventures demonstrating returns.

The core tension is real. Canada's economy faces structural challenges. Manufacturing capacity has declined. Supply chains remain vulnerable in critical sectors. Competition from subsidized competitors, particularly in the United States under the Inflation Reduction Act and from other jurisdictions, creates pressure for government to pick strategic bets. Green hydrogen, advanced semiconductors, and critical minerals processing represent sectors where Carney argues state capital should flow.

Yet the opposing case carries weight. Government-directed investment historically produces mixed results. Capital misallocation compounds when bureaucratic criteria replace profit-and-loss discipline. Companies sheltered from market discipline underperform. Zombie firms persist. Venture capital, private equity, and commercial lenders face competition from government money unconstrained by return requirements. This crowds out private investment and distorts price signals.

The market-discipline argument holds particular relevance for climate and energy transitions. Private capital has moved aggressively into renewable energy, battery technology, and grid modernization where returns appear sustainable. Government intervention works best as backstop financing for early-stage technology, not as primary capital allocator for mature sectors. When policy favors incumbents or unproven technologies, it locks in inefficiency.

Canada's track record offers instructive lessons. The Canadian Development Investment Corporation, various regional development agencies, and provincial Crown corporations have produced both successes and expensive failures. Infrastructure projects chosen for political benefit rather than economic necessity consume resources. Industrial capacity built with subsidies often cannot compete once support ends.

Carney's framework faces a different problem: scale and scope. A C$25 billion fund is substantial enough to meaningfully shape capital allocation but potentially too small to guarantee success across multiple sectors. The fund must either concentrate bets in few areas, accepting failure risk, or diversify widely, diffusing impact.

The pragmatic middle ground requires strict discipline. Government capital should flow to activities market failures prevent, not activities markets have simply rejected. This means early-stage technology demonstration, not commercial scaling. It means risk capital for unproven concepts, not patient capital for established companies. It means sunset provisions and rigorous return tracking.

The fund's structure matters enormously. Independent governance insulated from political pressure becomes essential. Board composition should include private investors with real skin in the game, not appointees answerable to ministers. Investment criteria must be transparent and consistently applied. Failed investments should trigger public accountability, not quiet write-offs.

Canada faces legitimate industrial-policy questions. But the answer cannot be government replacing markets across the board. Instead, government should operate at market edges, backing ventures private capital won't touch yet, then exiting once commercial viability emerges. Markets should retain veto power over government bets. When private investors pass on an opportunity, that signal deserves respect.