I listened to this YC podcast[1] twice with Juan Benet. Listening to Juan talk about a lot of historical information and the correlations he drew was fascinating. When he tried to explain the need for Filecoin to Dalton, I just didn't hear it. Dalton kept asking him over and over what the point was and he kept giving non-answers (at least in my opinion which doesn't mean much to be honest). I understand the goal of t…
His favorite response was "...and a whole bunch of other things".
On a more serious note, it's very early days for the filecoin and related group of projects that they intend to fund, so the answer to Dalton's question is : "we don't have the answers yet. There are a whole bunch of theoretical use cases and the most promising seems to be decentralized storage. The reason we are raising money through this ICO is simple : people are ready to invest dumb money and we are more than happy to take it. We have legitimacy because we are backed by the most well known VCs who are eager to 10X their money within 3 years and we have a whole bunch of protocol design/specs."
It's kind of self fulfilling : promise a grand vision, take hundreds of millions and hopefully deliver any working product sometime in the future.