Stratis allows developers to create applications in C# and Microsoft's .NET framework. C# is one of the most dominant languages in corporate and financial services development.The Stratis Full Node Framework is a based on Bitcoin Core and utilizes the proven and trusted architecture and consensus model of Bitcoin.

Stratis will be a full scale Blockchain Development Platform that simplifies and accelerates the development life-cycle for organizations that want to develop on the blockchain.

Mentioned in the whitepaper are case studies how Stratis tech will be used in the real world. http://stratisplatform.com/files/Stratis_Whitepaper.pdf

I also see a space that this could fill that isn't currently occupied.  Many of my friends and colleagues mostly Microsoft veterans like myself have no desire to get involved with cryptocurrency but might give it a second look if it was based on technologies that they are familiar with.  I see many real world use cases for blockchain technology using C# and .NET.  Regardless of anyone's opinion of Microsoft, the fact remains that they own the desktop and corporate markets.  C# and .NET are already widely used in those environments.  This would make it much easier to deploy blockchain technology into those environments.  

One real world use scenario would be Unity which has already been mentioned in this thread.  I can imagine a game made in Unity, coded with C#, and allowing for in game purchases using bitcoin.  It could be used as a sidechain for things as common as tracking time cards, inventory, ledgers, etc...  The uses are out there but getting people to adopt it is another story.  The fact that it is based on Microsoft technologies is a plus for the market that they appear to be targeting.  I think it's a long shot but the potential is there.