Just out of curiosity why did you decide to use GCP rather than Azure or AWS?
Isn't Netflix running on the same platform (AWS) as Amazon Prime?
Realistic speaking, what's the huge win for GitLab?
All it takes a someone in the billing department leaking metadata to a project manager for confidential information to leak (traffic numbers, storage trends etc.).
Sure trust every employee of your only real competitor if you want, but I wouldn't if it was my business and I had alternatives.