Not really. They actually ran mock trials with legal professionals as test cases. That was an instant win for anyone wanting assurance of admissibility.
No open source startup is going to win there because it's about entities and process, supported by technology not technology on its own. The technology is absolutely worthless without the framework and legal entities surrounding it. It's a unique position no one really understands that well.
They began when Digital signatures were not understood well even by legal professionals. Somewhere fear might have came in picture. Today, its easier to digest the fact that digital signatures are just cryptographic functions that guarantee the authenticity and integrity of documents and various actions on those docs. Plus the legal framework around it is better defined now. I am confident that we will be able to change the perception and make this the de-facto digital signing solution. The movement has just began, there is a long way ahead.
This answer is incredibly technocratic, and misses the mark on what a digital signature is.
A digital signature is a legal construct that stands up in court.
The movement might have begun, but you need to change your perception. You have to stop talking like a technocrat and address the business problem that signatures solve.