Ask a media buyer why a click costs what it costs and you will get an answer about audiences, creative quality, and relevance scores.

All of that is true, and none of it is the first cause.

The first cause is the number of companies bidding for the same person's attention at the same moment. Every ad auction, every creator's rate card, every affiliate network's payout table is a price set by crowding. Where the crowd is thick, attention is expensive. Where it is thin, attention is cheap, whether or not anyone has noticed.

That is the whole idea behind how we choose channels, and it is simple enough to put in one sentence: look where few look.

Why the crowd gathers in the same place

Companies buy where the buying is easy. The large platforms made a specific bet: give any company with a credit card a self-serve interface, an audience of billions, and instant reporting, and the bidding will take care of itself. It did. The convenience is real, and so is the price it produces.

The result is a market in which most marketing budgets compete in the same three or four auctions, against the same well-funded companies, for the same scroll. In that market, the buyer with the largest budget or the most patient investors wins, and everyone else pays a premium to be visible for a moment.

Where the bidding thins out

Bidding thins for three reasons, and only one of them is that a channel is bad.

The channel is unglamorous. Affiliate programs, comparison sites, email lists that have been carefully maintained for a decade, niche newsletters, mid-sized creators with an audience that actually buys. None of it makes a good slide. All of it is priced accordingly.

The channel is inconvenient. It requires recruiting people rather than uploading a file. It reports in spreadsheets rather than dashboards. It takes six weeks to stand up rather than six minutes. Inconvenience is a form of thin bidding, because most companies will not do the work.

The platforms said no to the category. This is the one that matters most to the companies we work with. When Meta or TikTok restricts a category, the well-funded competitors who would otherwise crowd the open-band channels are stuck in the same review queue. The affiliate networks, creator networks, and programmatic inventory that carry those categories are thinly bid, not because they do not work, but because the platforms that would have made them unnecessary said no.

The discipline that makes it work

Cheap attention is only valuable if you can tell whether it did anything. Thin bidding without measurement is just a smaller invoice.

So the method has two halves that have to be held together. Measure cheaply, in several places at once, before committing anything. Then, when a channel reads, put everything behind it. Companies that only do the first half end up with a portfolio of half-run experiments. Companies that only do the second half are back in the crowded auction, having skipped the part where they found out.

What this looks like in practice

A fintech company we would describe as noisy is spending across six channels and cannot say which one produced a customer. The instinct is to consolidate onto the largest platform, because that is where the reporting is best. The thin-bidding instinct is different: spend one week measuring the three channels competitors are ignoring, with tracking the company controls, and let the numbers choose.

The answer is not always the obscure channel. Sometimes the crowded auction is worth its price. The point is that the decision is made on a measurement rather than on convenience.

lowob takeaway: The price of attention is a crowding effect. The channels your category can actually use are usually the ones your competitors have written off, which is precisely why they are worth measuring first.