If you are making something as a branding or contract, then you better keep it. People break promise every time and not like all of them are evil, malicious, or should go to jail. But a bank failed to pay back frequently will definitely found themselves doubting where the customers go.
It's not because they are evil persons. It's because when that promise and trust is broken, I need to severely rethink about other thing. If they ever comes out with NPO financial report or even a formal apology, I'm fine - I mean I'm mad a bit, but not angry. They tried something and it doesn't work, like every success story (or failure story that no one asks) things do go south. But if the solution of the company is secretly hiding it or even publicly denying it (not in this case but that kind of stuff did happen before), then they are not getting a penny from me.
As making cloud storage free for everyone without ads forever is not quite possible nor sustainable, unless you farms telemetry for money (GDrive, dropbox with insane telemetry found recently). It is purely understandable and predictable the business model will die some day, and it's definitely not to blame them for not being able to keep this forever. This is not QE4 and money is not printed in house. But apology and even a changelog is free and it definitely cost more to try to hide it then be honest with it. That's a misdemeanor to perjury for me.