Picture a solo entrepreneur whose revenue comes almost entirely from a single client. The worry that this relationship could end at any moment is a daily companion, yet the risk has never actually been written down as a number. Alphabet, Google's parent company, wrestles with the same anxiety. The difference is that Alphabet writes it down — as a conditional statement, complete with dollar figures, in its annual report (the 10-K). Today, we'll use that document as a textbook for learning how to size up the risks in your own business.

Naming the Risk: Turning Anxiety Into an If-Then Statement

Naming a risk means translating a vague worry into three numbers. The first is dependency share — the percentage of total revenue that comes from a single source. The second is the conditional impact — the amount that would vanish if that revenue source were disrupted. The third is the gap — the margin by which cost growth outpaces revenue growth. Once you have all three numbers, the feeling of anxiety becomes a manageable line item. This doesn't take sophisticated financial expertise so much as the discipline to plug numbers you already know — your own revenue and costs — into the right slots.

How Alphabet Writes Down Its Anxiety

Google Services, which bundles advertising and subscriptions, makes up more than 80% of Alphabet's total revenue. The report doesn't stop at that figure — it attaches a conditional. If privacy regulation and a slowing economy pushed ad prices down 10%, the company estimates, the resulting revenue hit would run to roughly $30 billion. Dependency share and impact amount sit together in a single sentence.

Costs follow the same grammar. Operating expenses in 2025 came to $111.3 billion, up 22% from the prior year, while revenue grew only 15%. That's a seven-point gap. Alphabet currently holds a 32% operating margin, but has calculated for itself that if this gap persists, margins could slide to 27–28%. The filing even flags the specific line items driving the increase — rising legal costs and higher compensation — pointing to exactly where the company would need to tighten up. In effect, it defines the very condition of costs outgrowing revenue as a risk in its own right.

The way Alphabet frames its newer bets is worth studying too. Cloud posted a strong 36% growth rate, yet still accounts for only 8–9% of total revenue. Growth alone paints a rosy picture, but the moment that share is placed right next to it, a different truth emerges: this new business still has a long way to go before it can offset the core business's dependence on advertising. Alphabet also discloses $91.4 billion in capital expenditure poured into AI infrastructure, while noting plainly that it's uncertain when — or how much — that investment will pay off. Regulation gets the same treatment: violating the EU's Digital Markets Act, the filing notes, could bring fines of up to 10% of global revenue — even the penalty clauses get converted into dollar figures.

Translating This Into Your Own Numbers

Apply this same framework to your own business, and you have a method any solo entrepreneur can use to size up risk. It comes down to three steps.

First, calculate your dependency share. Look at the past 12 months of revenue and write down, as a percentage, what your single largest client or sales channel accounts for. It doesn't matter whether that's a marketplace platform or a loyal repeat client — the number is sitting right there in your bank statement.

Second, attach the conditional. If that client cut your rate by 10%, how much would you lose over a year? If the contract disappeared entirely, how many months could you survive? Write these as actual dollar amounts rather than a vague sense of dread — only then does the size of your contingency plan become clear.

Third, check the gap. Line up your cost growth rate against your revenue growth rate from last year. If costs are outpacing revenue — the way Alphabet's 22% outpaced its 15% — calculate now where that leaves your margin a year from now. If you've started a side venture or a new channel, write its share of revenue next to its growth rate. Looking at both numbers together is the only way to soberly judge when that new venture might actually start relieving the risk in your core business.

One Line to Write Tonight

Tonight, write just one line in a spreadsheet: the name of your single biggest revenue source, its share as a percentage, and how much would disappear if price or volume dropped 10%. That one line is where learning to size up business risk begins. Once anxiety is written down as a number, it becomes a manageable list — and only in front of a risk that's been turned into a list can a founder finally prepare the next move.