How many software's have failed?

It's challenging to quantify the exact number of software failures, as countless applications and platforms have been developed over the years, many of which never gained traction or were discontinued. High-profile failures include projects like google Wave, Microsoft Bob, and various software startups. Factors contributing to these failures often include poor market fit, lack of user adoption, and inadequate funding. While some estimate that a significant percentage of software projects fail to meet their initial goals, the total number remains largely speculative.