Oef, well that's what this space is about F'ing around and finding out, it's the only way, sometimes there isn't product market fit, and sometimes you're too early but its all lessons
There will be a graveyard of bitcoin brands and companies, but they are not bitcoin thankfully, so we keep going.
Hopefully they find something that does generate positive cash flow, thats what startups need to do, keep pivoting until something does stick