Unfortunately, running ClaimID is not cheap, so we’re going to strive for a model that is both sustainable and secure.
I find myself increasingly prepared to pay for those services that I find valuable. Perhaps more importantly, I find I worry more about those services that don't offer me a way of paying directly for what I'm getting. This is just a personal thing and its certainly not clear cut one way or the other - some things are so successful that subscription model or not I don't have concerns about their future (though I appreciate that cast iron "sure things" don't actually exist in the real world). Others are worrisome even with the ability to pay directly for them. Indeed, this is one of the major considerations before starting to shell out hard-earned cash for something I guess. Whatever... one of the benefits of paying for something is that it helps to provide some direct context for the question, "How valuable is this?".
I'm saying all this primarily from a personal perspective you understand, though the reality is that the same considerations apply for those things we buy into in a professional capacity - it's just that in that case someone else is usually stumping up the cash.