That is a good question. One use case would be signing documents in person when that and a public notary is required. Some legal documents can be pseudo signe

That is a good question. One use case would be signing documents in person when that and a public notary is required. Some legal documents can be pseudo signed over various document sharing platforms but some business deals do not support this, especially when talking about acquisitions, mergers and sales of multi-million/billion dollar companies. Another disputable use case would be the human interaction factor when making large business deals. Historically people in person will be favored over people online. There are debates about this use case but money talks and people will go where the money is. Another use case are deals that require negotiating and/or discussing things too sensitive to discuss online and that is a topic in and of itself.