FIC Network is an upcoming ICO that's doing exactly what you are talking about. They are focusing on institutions (already have a product with a few clients) to create a fixed income market for crypto. I think it's great they are focusing on big players first before retail investors as I think this will help adoption, and is also in general a better marketing strategy.
why would institutions adopt FIC though? i don't see FIC well marketed or positioned with large players for real use
It depends on the institution, but adopting FIC would be faster, cheaper, and easier to audit.