Conversation so far:
who owns the data stored in a cloud system
If you created the data, you’re the legal owner, regardless of where it is stored.
where is the data stored in cloud systems
The physical storage spans multiple servers (sometimes in multiple locations), and the physical environment is typically owned and managed by a hosting company.
how much data can be stored on one cloud server
Cloud servers can hold as low as 100gb to more than 2tb.
who hosts cloud servers
Top hosts of cloud servers include AWS, Microsoft Azure, Dell EMC, Google Cloud Platform, IBM, ClearDATA, Intel, Rackspace, Iron Mountain and SAP.

Question: which of these companies owns the most storage units
Self-contained rewrite: which cloud hosts own the most servers