Sorry, but I call FUD here;
Had a very similar experience with google, except with maybe 20tb rather than 200, and no data loss.
They gave warnings at least a year in advance about the transition to google workspace from google for business or however it was called before. It was quite clear that this transition would eventually be mandatory and that it did not include unlimited space for a flat fee.
I punted on the transition for as long as possible, and when it finally arrived I temporarily added some accounts until I removed the excess data (mainly old backups I did not need anymore).
Nothing in life is unlimited and taking such a promise at face value appears to me as being willfully naive. Relying on such an offer as your main storage is begging for trouble. Expecting this to happen is precisely why I only stored backups there.
You don’t need to be an expert to do the math, consider that just to store the data, without any redundancy and without it being constantly spinning would have retailed at at ~ $4K using the cheapest drives (~25 8tb drives), and would have cost them ~$1/h or ~$700 to constantly run at CA electricity prices (~8W idle per drive). And this before redundancy, backups, bandwidth, etc. This is obviously unsustainable and will eventually end.
Same goes eg for dropbox, who offered “unlimited” storage for their business plan until fairly recently but now have the same limit of 5tb/acct as Google.
Who in their right mind would rely on such an obvious abuse of what was meant by “unlimited” to store the only copy of their life’s work?