[rdl]

There are clearly differences, different risks, etc. in different kinds of businesses.

A new concept for a physical retail store is different from "another dry cleaner" vs. a franchise vs. taking over an existing successful business.

A consultancy where you have 20 years experience in the field as a consultant for someone else is totally different from a b2b startup a a field you solidly understand where you have initial clients lined up before you start, vs. a consumer "hits driven" business.

There isn't a universal line between startup and small business; it probably varies with time and with the founders themselves.