Abstract
In this paper, we analyse the effects that the number and outcomes of R&D experiments have on the strategic equilibria between two firms that can both compete and cooperate in a context of uncertainty. As is well known, R&D projects are characterised by the sequentiality of investments and by the outcomes obtained from the success or failure of their experiments. Furthermore, the positive results and the number of tests carried out in R&D increase the market value of the innovative product. The Real Option Approach evaluates the flexibility of R&D investments and the strategic scenarios. According to Nash equilibria, we show how the market value threshold, for which the investment policy is optimal, depends on the number of experiments and on the information revelation.
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Notes
A critical aspect in the real option pricing approach is given by the impossibility to construct a replicating portfolio, as the assets are non-tradable. In general, investment problems are much too complex to be modelled as a standard option; hence, the option model must be tailor-made, with standard assumptions no longer applicable. Classic ROA is based on the assumption that the project can be replicated by a portfolio of market-driven instruments that are all exactly equivalent (Brennan and Schwartz 1985; Amram and Kulatilaka 1999). To solve this shortcoming, one issue can be to link the evaluation of a real project with quoted assets that have the same level of risk (see Borison 2005; Smith and Nau 1995).
Probabilities (6) are distributed as a sigmoid function in the interval [0,1[ and we assume that when the research investments \(\varPsi _i\) tend to infinity, then the probabilities p and q tend to 1. On the other hand, when \(\varPsi _i\) approaches zero, then the success probabilities reach zero. A similar application is given in Petrohilos-Andrianos and Xepapadeas (2017).
This is an illustrative example of our model. The data have been taken from the Ford and Volkswagen website and refer to the year 2018 (for more details https://media.ford.com and https://www.volkswagengroup.it/eng/media). The growth market innovation coefficients \(\alpha _{i,1}\) and \(\alpha _{i,2}\) are provided by Allied Market Research. The coefficients \(\beta _i\) were determined by the ratio between the impacts of R&D investments on profits.
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Appendix
Appendix
Proof of Proposition 1
We analyse the strategic payoffs assuming as variable the market value V. We can observe that:
As \(N(d_1(P,T))> N_2\left( d_1\left( \frac{P}{P^*_w},t_1\right) ,d_1(P,T);\rho \right) \), moreover, \(p^{ \varepsilon ,\theta }>p\) and \(K_{t_{0_k}t_{1_h}}>K_{t_{1_k}t_{1_h}}\), it results that \(\displaystyle \frac{\partial L_A}{\partial V}>\frac{\partial W_A}{\partial V}>0\). This condition assures us a unique critical market value \(V^*_{A,W}\). The same results occur for firm B. \(\square \)
Proof of Proposition 2
We observe that:
with \(\frac{\partial F_A}{\partial V}>0 \) and \(\frac{\partial S_A}{\partial V}>0\) and \(\frac{\partial F_A}{\partial V} \gtrless \frac{\partial S_A}{\partial V}\). The same results occurs for firm B. \(\square \)
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Villani, G., Biancardi, M. Competition and strategic alliance in R&D investments: a real option game approach with multiple experiments. J Econ Interact Coord 17, 63–86 (2022). https://doi.org/10.1007/s11403-020-00304-3
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DOI: https://doi.org/10.1007/s11403-020-00304-3