"The Data Transfer Project eliminates the need to download data at all. Instead, data is transferred directly between service providers."
https://github.com/google/data-transfer-project
This is probably good for Google et al, and for usability, but it's not great for actually owning your data. Who interoperates with who, and how, will be very significant. More at:
https://opensource.googleblog.com/2018/07/introducing-data-transfer-project.html