The honest answer is somewhere in between — but leaning toward custodians, and increasingly so.

The "Ownership" Case

Partners hold equity stakes and receive a share of firm profits, not just a salary. At the Big 4, equity partners can earn anywhere from ~$400K to well over $1M annually depending on seniority and geography.
They vote on firm leadership, major strategic decisions, and admission of new partners — hallmarks of real ownership.
They bear personal financial liability (in some structures), contribute buy-in capital (often $200K–$500K, sometimes financed by the firm), and sign personal guarantees on certain obligations.
They can influence the culture and direction of their practice areas.

The "Custodian" Case (and the stronger argument)

Forced retirement/mandatory exit ages (typically 60–62 in most Big 4 firms) mean partners cannot hold their stake indefinitely. You don't truly "own" something you must surrender on a schedule set by others.
The firm's brand, clients, and systems belong to the institution, not the partner. A departing partner rarely takes meaningful client relationships; non-solicitation and non-compete clauses are aggressively enforced.
Partnership agreements are heavily one-sided — the firm (via its governance board or managing partner) can effectively de-equitize or remove a partner through performance reviews, restructurings, or culture-fit determinations.
The buy-in capital is returned at exit — it earns little to no return beyond the profit share during tenure. It's more like a membership deposit than an equity investment.
Partners have no transferable ownership — they cannot sell their stake to an outside party or even another partner. The "equity" evaporates at retirement.
Increasing corporatization of Big 4 governance means real decisions are made by a small executive leadership team, with rank-and-file partners having diminishing say — much like minority shareholders in a corporation.

Are Partner Benefits Becoming Less Desirable?

Yes, meaningfully so, and this is an increasingly discussed issue inside the firms.

What's Changed

Factor	Then	Now
Path to partnership	~10–12 years, relatively clear	12–15+ years, more competitive and opaque
Profit per partner	Growing steadily	Squeezed by headcount expansion and tech investment
Work-life balance	Always demanding	Worse post-pandemic with always-on expectations
Capital buy-in	Manageable	Rising; often $300K–$600K+
Job security	Very high	De-equitizations more common; restructurings increasing
Prestige premium	Substantial	Narrowing vs. tech, private equity, and industry CFO roles
Autonomy	Moderate	Declining as centralized KPIs and utilization metrics intensify

Specific Pressures on New Partners

Longer runways to recoup buy-in — with forced retirement ages fixed, a partner making it at 42 vs. 35 has materially fewer years to benefit.
Rising competition from alternatives — tech companies, PE/VC-backed firms, and boutique advisory shops now offer comparable or better comp without the political grind.
AI and automation anxiety — audit and tax commoditization threatens the revenue base that funds partner draws, particularly in traditional service lines.
Cultural shift — younger professionals place higher value on flexibility and purpose, and the Big 4 partner track is fundamentally a deferred gratification model that fewer people find worth it.
Increasing liability exposure — regulatory scrutiny (especially post-PCAOB reforms) means partners face more personal risk than a decade ago.

The Bottom Line

Big 4 partnership is best understood as a well-compensated, time-limited franchise arrangement — not true ownership in any classical sense. And while it remains a prestigious and lucrative outcome, the value proposition is eroding at the margins, particularly for those entering partnership today versus 15–20 years ago. Many senior managers are increasingly doing the math and concluding the juice isn't worth the squeeze.

u/houcok

Big 4 Partners: Owners or Custodians?