I can assure you, the calculations don't make sense. They need several copies of the data you're storing, spend electricity to keep the data available, pay for internet connectivity and bandwidth. Not to mention they need humans to maintain these systems.

And to do this for 99 years? After 5 or so years you're losing them money and unwanted customer, a liability.

But, everyone can make their own decisions on how they store data, if you're happy with them, there's nothing wrong with that!

I am here just to heed a warning on not blindly trusting these deals from any company, as these have been proven time and time again to not last for many years. Ponzi schemes will eventually collapse.