It appears there might be some confusion with your question, as “Bet” can refer to a variety of things. If you are asking about the origin of betting or gambling, this practice has ancient roots, with evidence of betting activities dating back to ancient civilizations.
For instance, dice games have been found in ancient Egypt, and赌博 (gambling) was a common pastime in ancient Rome and Greece. The first known lottery was held in China during the Han Dynasty between 205 and 187 BC. The concept of betting on sports or events has been around for centuries, with organized betting likely starting in various forms as soon as there were events to bet on.
If you are referring to a specific company or brand named “Bet,” such as a betting company or a television network, please provide additional context so I can give you a more precise answer. For example, “Bet365” is an online gambling company that was founded in 2001, while “BET” (Black Entertainment Television) is an American cable channel that was launched in 1980.
Please clarify your question so I can provide the information you are looking for.