How was investing in the stock market like gambling?

People were putting money in several stock companies.
People were using credit to make purchases.
People had to travel to certain halls to purchase stock.
People were betting that their stock would prosper.

people were betting that their stock would prosper.

Explanation:

when you gamble you bet your money or *stock* and hope it doubles or even triples but there is a chance you could lose like say you invested in Walmart 50 years ago there was a chance the stocks you bought wouldn't grow and you would lose your money but if they did grow you could become a millionaire because you invested in a good company

if I helped give me brainliest please!!!

i need the diagram.