You don't always need to have enterprise $$$ to take an antifragile approach though.
I'm mirroring my private Git repositories between Gitlab.com and Bitbucket, which can be done for $0.
I might even end up paying for the bottom end Github.com ($7 per month) and Gitlab ($4 per month) accounts and have three way redundancy.
This sounds like Nassim Taleb's antifragile meme [1].
If I was running IT for some large enterprise (which I'm not!) then I might replicate services on both AWS and Google Cloud. A bit like Apple try to have more than one supplier for their hardware components.
[1] https://en.wikipedia.org/wiki/Antifragile