Most often, the problem lies in one of them or where several of them intersect.
There is a simple, practical diagnostic.
If user acquisition pays back with a comfortable margin, you can increase budgets, build the team and look for new traffic sources.
If, however, acquisition costs exceed the revenue a user generates, the product must come first: its value, retention and monetization. Scaling marketing in that situation only means spending money faster.
In most cases, the situation lies somewhere between these extremes. Say you spent a dollar and got 50 cents back. That is not nothing: it means there is demand, but you need to understand what exactly is keeping the economics from adding up — the product, the price, the funnel, the creatives, the segmentation, the channel or retention.
Sometimes the solution turns out to be surprisingly simple: changing the subscription model, testing a different billing period, adjusting the price, removing an unnecessary step from the funnel, or framing a clearer offer for the user.
An entrepreneur usually senses where it hurts, even if they cannot immediately pinpoint the cause: the product isn’t growing, marketing doesn’t pay back, the team can’t keep up, sales are too slow, there is never enough money.
The first question I would ask a founder is: “Where do you think the main problem is?”
If they answer in detail and honestly, that is already good material for analysis. From there you can check the numbers, review the product, metrics, funnels and processes, and draw your own conclusions.
For me, every project rests on three main pillars: