"Scalability" means that you can adjust the scale at which you are operating. The definition of "At scale" just means operating at whatever is a sufficient sca

"Scalability" means that you can adjust the scale at which you are operating. The definition of "At scale" just means operating at whatever is a sufficient scale to solve the problem at hand. If you only need one dinky laptop to solve the problem, you can operate at scale with a dinky laptop. So "fishing at scale" is fishing at a scale that statisfies the demand for fish. Since demand for fish will drop as sustainabile fishing regulations increase costs, there is absolutely a way to fish at scale sustainably.