Tough question, one I ask myself often, and one new projects genuinely looking to develop must also be scratching their heads over.
I'd say, keep focussing on the real world. Everyday use. Keep working to build use cases, keep working on the one or two businesses or customers that want to use the service, show people that is works, it delivers as it promises, and hope that more people want to try it. Organic growth is painfully slow but it's the one that will last the longest and will become self sustainable.
Tackle it as you would a typical business plan. Assess the risks, the challenges, the opportunities, and keep building practical progress towards your objectives. That's all it really is in the end.
Probably because there is no real value in your service.
Value is what people attribute, not what you see... otherwise there's almost zero value in everything you don't see as useful or interesting...
