Barriers to entry are the obstacles a new company must clear before it can compete in your market at all. Licences, minimum equipment cost, regulation, exclusive distribution, and required scale are typical ones. High barriers protect the companies already inside. Before you enter, they work against you.
Barriers take several forms: capital requirements, licences and regulation, patents, exclusive supplier or distribution deals, high customer switching costs, and cost advantages that only appear at large volume. Some are created by law, some by market structure, and some by the companies already competing.
An example. To open a small dairy you need a pasteurising line at 180,000 euros and food-safety certification that costs 25,000 euros and takes six months. That is 205,000 euros and half a year before you sell one litre. Compare that with starting a newsletter about food, where the barrier is close to zero. The first market has few competitors and slow entry. The second has thousands, and a new one appears every week.
Founders read this concept in one direction only. They ask whether barriers will protect them once they are inside, and forget that the same barriers stand in front of them today. If you are the new entrant, list what you must pay, obtain, or wait for, and put it in your plan as a timeline with costs attached.
The second misunderstanding is treating barriers as the same thing as visible competition. A market can have low barriers and few competitors, which usually means it is not attractive yet. A market with high barriers still hurts you if the companies inside compete on price.
Barriers also serve as a funding argument. If entry costs 205,000 euros, an investor understands why money is needed before revenue exists.
