Answer:
The Internet
Step-by-step explanation:
The internet created the uncertainty due to its ability to massively improve the companies' position in the market and heavily damage it at the same time.
On one hand, internet made it easier for companies to promote their products. They can reach consumers on far location with very little cost. This is extremely beneficial for the industries in general.
On the other hand, internet also make it easy for people or competitors to spread false information about the product. If its not managed properly , it will actually damage the company's reputation and will destroy its stream of revenue.