"The mighty holders on internet,Google and Facebook are shares large scale data of there users to government."
The Google shares data of their own Google map users(at the time in USA).And Facebook provides mobile location data using users posted photos and stories in every day(at the time in USA),to the government.

Google's Report-:

According to Google's report named as,"COVID-19 community mobility report to the government, Researchers".
The Google reports the movement
on places like groceries, medicine stores, supermarkets and other workplaces,Are around from 131 countries.It reports the data from 2-3 weeks before the date of release of data.
The Google don't share personal data like contact, photos and individual location.
It is only collect the data from person who have turned on the location history setting.
It tracks movements in supermarkets-The movements like how many people's visit supermarket during the home quarantine.
The Google trying to put the data anonymous, because of the don't spread chaos during this pandemic.

Facebook attempts-:

Facebook providing insights since middle of march,To the COVID-19 mobility network members(Researchers).A group of
researchers are selected from top universities like Princeton, Harvard.
The Facebook researchers shares the general data to the local health departments and state authorities.
Like Google it don't shares whole data.