Apr 28: If the merger of Indian companies is to allow for economies of scale, it will not really work, according to analysts. 8The merged entities will be nowhere near the big five oil majors in the world 8Even if all the eight listed oil PSUs are merged into one entity, the company will have a market value of around $ 110 billion, larger than RIL's $ 71 billion but smaller than most large global oil companies 8If only ONGC ad HPC are merged, the market cap will be $ 45 billion 8This compares badly with the $ 345 billion cap of Exxon Mobil 8The big question remains unanswered here: how big will be really big? 8So rather than merging, the emphasis should be on efficiency gains Click on Reports to find out more