Question

How are shop owners in a weekly market and those in shopping complex very different people?

Answer 1

Both are undoubtedly different people.
(a) The shop owners in a weekly market are small traders who run their shop with little money. On the other hand the shop owners of shopping complex are big parties. They have a lot of money to spend on their shops.
(b) What these two types of shop owners earn is also not equal. The weekly trader earns little compared to the profit of regular shop owner in a shopping complex.