Economies of scale and technological change represent distinct economic concepts—one relating to cost advantages from operational size and output volume, and the other to innovations in methods or products—making this statement trivially true by definition.
The claim differentiates two standard economic concepts: economies of scale (cost advantages associated with size/output) and technological change (shifts in the production function via innovation). Because these terms refer to fundamentally different economic phenomena by definition, the claim is common knowledge and does not require empirical citation.