So when they shut the service down in 18 months and kill all access to our data, will they be quick to point out that "indefinitely" = for as long as they are profitable? Now I'm not saying this is what's going to happen, but you would have to be foolish not to consider this the most likely outcome.
Aside from the fact that your answer wasn't an answer, you are essentially making false claims on your Web site using words like "never" and "anything." Hopefully you don't get sued by a paying customer who holds you to account for those claims.