Digital identity is an infrastructure necessary to do most everything on the Internet. And while there have been many solutions through the years, It remains a problem.
Companies own the digital identities of the people that use their services. Centralized databases are a security risk for cyberattacks; not to mention the low integrity of stored data, and users have little to no control of how their data is secured. From business perspective digital identities are a huge administrative overhead, highly costly and a permanent potential risk (in case of data breach).