I'm ever so slightly optimistic in this regard. As soon as we see a few GDPR-related penalties assessed, the risk-reward calculation will change drastically.
According to their 2017 annual report [1], Marriot had $22.9bn in worldwide revenue. A 4% penalty on that would be $900M.
[1] https://marriott.gcs-web.com/static-files/057a8e1a-a5c5-4c20...