Many people said google and one drive ia very safe cloud in the world
Google is the most insecure and very low privacy search engine, those people are really dumb to say Google cloud is very safe lol. Using cloud is just like trusting to unknown person about your data or any files that you upload to cloud. In Bitcoin, we're trying to get rid of trusting third party since trusting someone isn't enough, we need to verify them. Since we can't verify a human brain, we can only verify the code.
You're right, of course, but you're overly hating Google's security level. Data stored in the cloud is almost always encrypted. The cipher must be cracked before an attacker gains access to the information. The location of such encryption keys varies depending on the storage services.