According to startup guru Steve Blank, a startup is a "temporary organization designed to search for a repeatable and scalable business model", while small businesses operate according to a fixed business model.

Let's take an example. Imagine we have two founders: Steve and Charles. Steve is launching a software startup for barbershops, while Charles is taking a more traditional approach by opening barbershops. Each of them is looking for $1M.

Steve Charles
Capital requests $1,000,000 $1,000,000
Objectives Cover 100,000 barbershops Open 10 barbershops
Costs structure Team, Marketing Rent, Equipment, Team, Marketing
Costs growth Revenue grows faster than costs Costs grow proportional to revenue
Predictability Complex Simple
Multiplier ? 2-3
Investor’s ROI 100X 5X

While the businesses seem to be similar, only Steve has a venture. He has a high-risk software business with high returns and high risks. Steve can generate huge revenue without proportional cost growth, but at the same time, the chance of failure is 90%.

Charles' business is much less risky, but the expenses will grow almost linearly with revenue growth due to a broad cost structure of the classic business model (rent, equipment, paywall, etc.).

The predictability and uncertainty of both businesses are different. Charles has a more predictable business with less uncertainty, but it won't be as huge as Steve's.

So venture business is characterized by rapid scalability, high margin uncertainty, and poor predictability.