Top 10 Reasons Why 87% of Machine Learning Projects Fail?

We see news about Machine learning everywhere. Indeed, there is a lot of potential in Machine learning. According to Gartner's predictions, "Through 2020, 80% of AI projects will remain alchemy, run by wizards whose talents will not scale in the organization" and Transform 2019 of VentureBeat predicted that 87% of AI projects will never make it into production. Why is it like that? Why do so many projects fail?