“Development costs at least 10 times as much as research, and commercialization costs 10 times as much as development. So in the end, research — which we think is the most important part — is only 1 percent of the effort.”
This just means that it's easy to get something working in a lab but it's hard to make a product that you can mass produce. In non-voitile memory a flash replacement is always 2 years out, just like cold fusion is always 10 years out.