Do technology bubbles deliver net social gains despite costly crashes?
Core argument: Lansing (2012) models technology bubbles with costly crashes and calculates that social benefits exceed social costs when a technology's social rate of return exceeds 2.5 times its internal rate of return.
Profit-maximizing firms only consider their own IRRs, [and thus] forgo much high-SRR [Social Rate of Return] R&D. Externality theory prescribes intellectual property (IP), R&D subsidies, and other interventions to boost innovators’ IRRs; however, mounting evidence contests the efficacy of these responses. [A “Kindelberger cycle” often] begins with a hot new technology, sometimes a new market, with very high expected IRRs. A mania inflates stocks thought favored by the disequilibrium. The bubble bursts, and a panic, crash, and (sometimes) socially costly economic downturn ensue. Economic comparisons of these social gains and losses are remarkably rare. Lansing (2012) models tech bubbles with costly crashes and calculates that social benefits outweigh social costs if the technology’s SRR exceeds 2.5 times its IRR. Figure 2 suggests that the SRR of corporate R&D exceeds the IRR by a factor of 4. Historians and marketing researchers also conclude the social benefits of bubbles exceed their social costs.


