nightcraw1er.488: Why would you even consider doing this? First off, the single and only point of offline installers is that you own it and control it. If you store it on google, if they decide they don’t want your files or you then you lose it, same as online drm. In a different vein, google will have a cap and then you will have to pay. Offline storage, external or internal hdds are dirt cheap, pay once.
The point would be to add security to the backup copy.
If you think having only one backup copy, on a single HDD, makes the copy secure and guarantees that it will be yours forever...well, that is woefully inaccurate information.
That HDD could easily receive hardware damage and make the backup copy totally unusable.
Or it could be stolen.
Or there could be a fire and/or other natural disaster which destroys the HDD.
Really, that is no such thing as a "secure" backup: all of them, on any possible device, could potentially be lost, period.
The next best thing, the best anyone can ever possibly hope for, is to have multiple different backups, on multiple different hardware devices, and with not all of the copies stored in the same physical location.
So to that end, having backups on a Cloud storage service is a great idea, in theory.
However, the OP also has a good point in that the storage service would likely object to that on copyright infringement grounds.
So to the OP: you raise a very good question. I personally do not know the answer to it.
Probably you'd need to consult a lawyer, or many lawyers, to get a proper answer. And even if the lawyers say it's legal to do it, that still doesn't mean that the Cloud hosting companies would allow it, even if it's legal.
I think the question is beyond the kind of thing you can get a full & definitive & comprehensive answer to by way of asking random laymen on the internet.