Corporate Clouds
White Clouds are companies that COLLECTS your data for internal user, they might use it to provide services to you or they might use your data to influence you. Despite not releasing your data to external parties for profit, they do get hacked very often.
Although Paypal discloses who the third parties they are sharing your data with, there is no information how those numerous parties are using your information.
Privacy Policy Dellusion
You need to understand that Privacy Policy of any company is to protect the company NOT to protect its customers.
Most of these privacy policy start by saying in a lengthy manner how important your privacy is to them and then somewhere in the middle quickly tell you how they can use you information in ways you don't know without you consent - that is they are doing the exactly the opposite of what they said in the beginning of the policy.
Who has the time to look up the legal jargons or read through the whole document ?
Loyalty Point Programs
Loyalty programs that analyse or sell your data are also Corporate Clouds, you have no control of what they are doing with your data (e.g. using your data to influence you) and you lose out on potential income from the data they have gathered.
Not Clouds
Providers of application INDEPENDENT compute power (like virtual machines e.g. Vultr, AWS etc.) are NOT Clouds, as they do NOT dictate what software you can run of their machines and they do not access your data as part of their business model.
We call these providers Hosters, as they host computers remotely for their customers. Hosters plays an important part within the Citizen Ecosystem.
A few online services like Wikipedia and OpenStreetMap are not, but most are.