Why finance is regulated

Markets usually protect buyers without anyone's help. A bad restaurant loses customers; a bad phone gets reviewed. Finance is regulated because the mechanisms that do that work badly here, and for reasons specific enough to list.

The four conditions

The product is a promise. A bond is an undertaking to pay later. A pension is an undertaking to pay decades later. There is no object to inspect — only a counterparty and a document, and the quality of both is revealed by events.

Quality is revealed slowly, if at all. You find out whether the advice was good in years. By then the adviser has moved, the product has been renamed, and you cannot separate their contribution from the market's.

Most purchases are unrepeatable. You choose a home loan a handful of times in a life and a pension once. Reputation disciplines sellers of things people buy repeatedly; it works poorly where each customer is new to the decision.

The seller knows much more than the buyer. Not occasionally — structurally and always. This is information asymmetry, and it is the central fact. The seller knows the charges, the comparable alternatives, the historical failure rate and their own commission. The buyer typically knows the sales pitch.

Why the asymmetry is not fixable by effort

The hopeful response is education: inform the buyer and the problem dissolves. It is a real part of the answer, which is why this site exists, and it is not sufficient.

Specialisation is efficient. A society in which everyone must master pension mathematics to retire is wasting its effort. The gains from division of labour are precisely what create the asymmetry.

The seller's information advantage is their business. You cannot read enough to know more about a product than the firm that built it.

Complexity is a lever available to the seller. Where comparison is the buyer's only defence, a product that cannot be compared to anything is commercially useful. That is why opacity tends to increase on its own unless something pushes back.

So the regulatory move is to change what the seller must do, not what the buyer must know. Mandatory disclosure, standardised comparison, registration, conduct obligations, and prohibitions on specific behaviours. Each is an attempt to put a fact into the buyer's hands that they could not have obtained themselves.

Two further reasons, beyond the individual buyer

Confidence is a shared asset. One fraud damages participation in the whole market, including by firms that did nothing. Honest sellers cannot capture the benefit of their honesty if buyers cannot tell them apart, so they will not outcompete the dishonest ones without a standard imposed from outside. This is the classic case for regulation that benefits the regulated.

Failures spread. The Financial institutions subject showed credit stopping for a whole category once one institution failed. A problem that travels is not fully internal to the parties who created it.

The mandate SEBI was given

The Act is explicit. Section 11(1) makes it "the duty of the Board to protect the interests of investors in securities and to promote the development of, and to regulate the securities market, by such measures as it thinks fit."

Read the three limbs: protect, promote development, regulate. That is worth pausing on, because the first two can pull against each other. A measure that protects investors may shrink activity; a measure that grows the market may expose more people to loss. Every contested SEBI decision you will read about is somewhere on that trade-off, and the statute does not rank the limbs. It is not a drafting defect — it is a political choice to leave the balance with the regulator, which is also why the balance is permanently arguable.

Section 11(2) then lists the measures, including "registering and regulating the working of ... investment advisers and such other intermediaries" and "prohibiting fraudulent and unfair trade practices relating to securities markets". Chapters 5 through 8 are those two clauses in detail.

Working the problem

Why the restaurant method fails. It depends on three things that are absent here: fast feedback, cheap repetition, and an outcome attributable to the seller. A bad meal is obvious that evening, costs little, and is clearly the restaurant's doing. A bad thirty-year product reveals itself after the money is gone, cannot be re-run with a different choice, and produces an outcome you cannot separate from the market's own movements. Worse, a good product can produce a bad outcome and a bad one a good outcome — so even the eventual result is a noisy verdict on the decision, which is chapter 8 of the Behavioural finance subject arriving in a regulatory setting.

Where it partly works: short-dated, high-frequency, standardised services where the output is observable immediately — a brokerage account, a payment service, a demat provider. You can tell within a month whether trades execute, statements arrive and support answers, and switching is cheap. Note what these have in common: you are judging the service, not the investment outcome. Ordinary market discipline handles execution quality tolerably well, which is roughly why the heaviest conduct regulation sits on advice and on product design rather than on plumbing.

The point

Finance is regulated not because of the character of its participants but because the product is a promise, its quality emerges slowly, most purchases are not repeated, and the seller structurally knows more than the buyer. Education helps and cannot close that gap, because the gap is a consequence of specialisation, so the regulatory move is to impose obligations on sellers rather than requirements on buyers. SEBI's statute sets three duties — protect investors, promote the market's development, regulate it — and gives no ranking, which is why nearly every contested decision is a judgement about that trade-off.