Postscript
Economic facts analyzed in competition law cases tend to be ambiguous and thus their characterizations could vary depending on who makes the decision. For example, any product is to some extent differentiated; a given product is homogeneous for some but not for others. In Western Digital Irland/Viviti Technologies, the European Commission reasoned that 3.5" Desktop HDD products showed features of differentiated products, whereas FTC and JFTC treated desktop HDD products as largely homogenous products. Such divergent economic fact-findings can also be explained by theory-ladenness.