When scale and focus align
lags and diminishing returns: early investment produces outsized gains, while incremental spending can yield smaller marginal benefits without complementary changes. Zvi Griliches at Harvard University emphasized that knowledge spillovers create social returns that firms capture only partially, so appropriability—the ability to protect innovations through patents, lead time, or trade secrets—determines whether R&D converts to firm-level profits. Sustained, focused R&D tied to clear product or process objectives therefore tends to be more profitable than sporadic, unfocused spending.
Complementary factors and timing
Profitability gains also depend on complementarity
Environmental and social implications matter: public and private R&D directed at clean technologies can reduce long-term regulatory and operational risks, whereas investment in high-emission technologies can create stranded-asset risks under evolving climate policy.