https://iapp.org/news/a/recent-survey-shows-gdpr-compliance-...
https://www.ft.com/content/0d47ffe4-ccb6-11e7-b781-794ce08b2...
https://www.dri.org/home/2018/02/26/gdpr-it-s-coming-it-s-ex...
https://www.wandera.com/blog/gdpr-expensive-data-breach-pena...
Those were just on the first page of Google. There are hundreds of others. That's not even counting my own experience with it.