I'm not sure what your argument is. That since the technology isn't fully developed we shouldn't fund development?
This is akin to saying (in the early 1900's) "Planes can only fly short distances, are very expensive, and can't carry any serious loads. It would just be better to put this money into trucking."
This is akin to saying (in the early 1900's) "Planes can only fly short distances, are very expensive, and can't carry any serious loads. It would just be better to put this money into trucking."