What problems can an entrepreneur expect to face?

An entrepreneur is either entering an established field, for example, you open a pizzeria, or you are trying to create a new field, for example, a device whose purpose is to repel pigeons. If you are in an established field then you have to compete with the other businesses that already exist in that field. People already have many, many places where they can eat Pizza, and there is no guarantee that they will want to eat at your place rather than one of the existing places. And if you have a new product, there is no guarantee that it will be in demand. Maybe there are very few people who are concerned about repelling pigeons. So there are risks in either case. In addition, there are lots of regulations from all 3 levels of government, which include tax laws, employment laws, zoning regulations, etc., to make your life more complicated. Running any kind of business tends to be expensive and you have no guarantee of making a profit.