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.