The Dutch CPB (Central Planning Bureau) issued a report named Competition, innovation and intellectual property rights in software markets (download pdf here). “This study analyzes under which circumstances it may be desirable for the government to
stimulate open source software as a response to market failures in software markets. […] Our most important finding is that directly stimulating open source software, e.g. by acting as a lead customer, can improve dynamic efficiency if (i) there is a serious customer lock-in problem, while (ii) to develop the software, there is no need to purchase specific, complementary inputs at a substantial cost, and (iii) follow-on innovations are socially valuable but there are impediments to contractual agreements between developers that aim at realizing such innovations.”