Government employees are, bar none, the least sophisticated users and consumers of computing technology on the planet. It's like taking candy from a baby. Plus, there's zero accountability - they can't get fired for screwing up.
Scale up the platform to billions of users (Google), and I will 100% guarantee everything I own now, or ever will own, plus my first and only born child who I love more than life itself, that this will be an epic disaster.
I cannot use cloud services because of the liability for mistakes in security.
I host my own data. I do not allow outside viewing. Therefore, I control the access cross-company to other companies’ data.
But cloud-based storage makes me liable for other peoples’ mistakes.