Final answer:
Scale of investment in R&D is NOT a source of strategic advantage through innovation, as it does not guarantee a creation of competitive edge, unlike complexity, legal protection of IP, and novelty, which do provide explicit advantages.
Step-by-step explanation:
The source of strategic advantage NOT coming from innovation in this context is "Scale of investment in R&D" as it does not inherently determine the strategic advantage. A huge investment in R&D does not guarantee that a firm will gain a competitive edge if the research does not lead to the creation of intellectual property or innovative products and services.
On the other hand, complexity as a strategic advantage can deter competitors due to the difficulty in replication. Legal protection of intellectual property can prevent competitors from using certain technology without permission, and novelty in products or services places the firm in a unique position in the market.
Intellectual property rights, such as patents and copyright laws, allow companies to protect their investments and earn above-normal profits by giving them exclusive rights to make, use, or sell an invention for a period of time, often 20 years for patents.