Deployed and available outside the EU, and more specifically in the US?
http://dataliberation.blogspot.com/2011/06/data-liberation-f...
For more up-to-date information see the Wikipedia page:
https://en.wikipedia.org/wiki/Google_Data_Liberation_Front#c...
This service works quite well, I'm using it to backup the whole of my Google data every few months, including Gmail, Photos and Drive.
While I feel locked in to an extent because I don't want to give up macOS/iOS/watchOS and their integration, I never felt that my data was locked up with Apple.
Google Takeout was/is a nice user feature. Google is not required to pass all of user's data.
GDPR compliance is different, companies are required to pass basically a database dump by law.
https://myactivity.google.com/myactivity
Or for specific products, you can figure out the demographic inferred for you on ads, or gps tracking for maps: