I disagree, when you produce a superior product people will seek it out. The fact that someone else is producing an inferior product does not take away from your own; it only serves to enhance your product.
The Martial Arts are an individual journey; you may share your path others, but they will not always be the same individuals you begin or continue your journey with. Everyone joins the Martial Arts for different personal reasons and ultimately they will stay or leave for other reasons. Similarly, the journeys and paths of those from the past, present, and future will never be the same, but hopefully will improve and progress over time.
The idea of a completely uniform system of progression in Brazilian Jiu-Jitsu or any other Martial Art for that matter is a pipe dream. Millions of dollars are spent each year in this country trying to standardize the public educational system with negligible results at best. I do agree that if you graduate from Harvard you would expect a certain academic standard to be upheld or improved upon at that school, but it is not possible to systematically hold every school outside of Harvard to these same standards. Not every school is Harvard and that is its charm.