Possibly the business configuration of a NPP vendor is a key: the electricity generation and NPP construction are to be integrated, otherwise a company can't tolerate risks of NPP projects implementation (without stable income cashflows).
The bankruptcy is a signal that the global nuclear power sector is witnessing a shift toward non-market economies, wherein companies generally receive assistance through government funding or advocacy, and this is not applicable to companies from countries that are members of the Organisation of Economic Co-operation and Development (OECD).http://www.power-technology.com/comment/commentwestinghouse-bankruptcy-and-its-implications-for-the-nuclear-power-market-5826267/
Not proper execution of projects and completion in time. In addition global financial crisis in past may be the reason. Last not getting proper price per unit of electricity. In the era of competition dynamic policy is required.