It seems to only work on Amazon.com (ie. US). That's a shame, as the alternative (finance-dl + beancount-import) is also restricted to Amazon.com (and possibly other English-speaking countries) and not easy to adapt.
Bonus points if companies are also required to allow users to import data in those formats. That would make it easier to avoid being locked into a specific platform: export your data from the old one, import it into the new one.
Before you say that this is impractical -- Google requires that other companies submit data to it in very specific formats (eg, product listings), so I don't see why governments can't impose similar requirements on companies, too.
It probably wouldn't be applicable for companies with highly-specific data models, though.
Interoperability seems a little difficult to enforce, like brokers that don't support fractional shares might need to start supporting them to import data from other brokers. Edit: I guess this example is poor but I just wanted to point out that schema/interop also involves data domain, validation, etc.
[0] https://ec.europa.eu/info/law/law-topic/data-protection/refo...
[1] https://www2.deloitte.com/ch/en/pages/risk/articles/gdpr-dat...
Article 20 [RIGHT TO DATA PORTABILITY]
1. The data subject shall have the right to receive the personal data concerning him or her, which he or she has provided to a controller, in a structured, commonly used and machine-readable format and have the right to transmit those data to another controller without hindrance from the controller to which the personal data have been provided, where: ...GDPR has its warts, absolutely. But I don't think that's a reason not to strive for even greater data protection measures for citizens going forward, especially if we amend the existing regulations to fix some of its unintended consequences.
[edit: typo]
> Article 20 \n Right to data portability \n 1. The data subject [you] shall have the right to receive the personal data concerning him or her, which he or she has provided to [the company], in a structured, commonly used and machine-readable format and have the right to transmit those data to another controller without hindrance
https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CEL...
Regarding importing: you as a user have the right to provide your downloaded data to a different party, but there's nothing in GDPR that says that party must offer the necessary import capability.
okay yeah you're still describing Article 20:
> the data subject shall have the right to have the personal data transmitted directly from one controller to another, where technically feasible
link?
"Request Your Personal Information" help article: https://www.amazon.com/gp/help/customer/display.html?nodeId=...
amazon.com link: https://www.amazon.com/gp/privacycentral/dsar/preview.html
amazon.de link: https://www.amazon.de/gp/privacycentral/dsar/preview.html
(They don't even mention "GDPR" on that page but that should be GDPR compliant.)