The barrier you will find is that while you have built awesome tech, the vast majority of commercial users with "big data" in fact have small data and small consistency and availability requirements, and a mongodb instance works just fine for them, and that's what they'll choose because they don't want the complexity of managing consensus groups or other theoretical compsci stuff.
Make this stuff so it "just works" with a one liner command to get started, and you'll have a commercial success.