So no, I don't think that response is universal.
[0] https://aws.amazon.com/compliance/gdpr-center/
[1] https://www.microsoft.com/en-us/TrustCenter/Privacy/gdpr/def...
1. The administrative/maintenance cost of complying: this is sunk if you have European users at all.
2. The cost of the measures to your business model, if personal user data is a central part of your business model.
3. The adminstrative cost of maintaining radically different user data management systems for EU -vs- non-EU users.
Doing number 3 is only worthwhile if it's a lower cost than number 2. I would guess 3 would be higher than 2 for most companies. Clearly, 2 is extremely high for Facebook.
In the case of Facebook, it makes sense that they wouldn't want to offer privacy protection to their livestock.
So far, I don't think any cloud providers show you ads based on your usage, but it's only a matter of time :) / :(