"Even if you pay for a service (say office 365), your data is still being stored, analyzed and sold."
And if you DON'T pay for the service, probably the only reason for it to exist is to sell your data.
Last month I signed up to a free Excel forum. Within a couple of days I was getting spam from domains at the hosting company that hosts the forum, and in a couple more days from elsewhere on the planet -- all to the spamtrap that I'd set up for it. }:-)
https://www.mrexcel.com/forum/excel-questions/1104708-cannot-run-macro-add-post5317833.html#post5317833
Biting the hand that feeds IT
