The most obvious way to stop firms gaining too much market power is is to prohibit mergers which seem likely to result in a substantial lessening of competition. This leads to the most common piece of competition jargon:- 'the SLC test' as in "did they find an SLC?".
All competition regimes exempt smaller mergers from scrutiny, although the test of size varies from country to country. In the UK, mergers are exempt from scrutiny if the turnover of the firm being taken over is £70m or less and the combined firms will have no more than 25% market share.
And all competition regimes operate a two phase review process for larger mergers, in which they endeavour to sift out (and so approve) those mergers which do not appear problematic, reserving detailed scrutiny for the minority which might lead to SLCs. Most countries allow the phase 1 sift and the phase 2 detailed scrutiny to be carried out by the same authority. But there is an inevitable suspicion that - having identified a potential problem - the same authority will want to prove that its initial suspicions were justified, especially as an understandable response to the companies likely complaint that the phase 1 decision was totally incompetent and unjustified. In the UK, however, the phase 1 authority (the Office of Fair Trading - OFT) is quite separate from the phase 2 authority (the Competition Commission - the CC). The OFT typically carries out a phase 1 review of around 200 mergers a year, but only refers 10 or 15 or so to the CC who in turn clear a good few of them. Overall, therefore, the UK regime manages to be both professional and unobtrusive.
The CC follows a fairly standard process for all merger investigations, which usually need to be completed within 24 weeks of the date of the reference by the OFT:
The following reports contain useful summaries of some interesting UK merger cases, and give a good feel for the issues which need to be considered by competition authorities when deciding whether or not to allow certain mergers to proceed. Both reports are on the CC's website.
One prominent merger which was allowed to proceed subject to conditions was that of the Carlton and Granada TV stations who merged to form ITV in 2003. The main condition was the the prices paid by advertisers would be subject to a complex price control known as the CRR. ITV subsequently lost market share and sought to have the CRR amended or abolished, presumably so that it could raise its prices and so lose further market share: a typically monopolistic reaction to adversity. The Competition Commission, to whom the matter was referred by the OFT, was predictably unsympathetic when it reported in 2010. Diana Guy, Deputy Chairman of the Commission, said the power of the company's flagship channel remained undimmed. "ITV1 remains a 'must have' for certain advertisers and certain types of campaign," she said. "So the essential reason for the CRR undertakings remains: to protect advertisers and other commercial broadcasters from the enhanced market position created by the merger of Carlton and Granada."
It was therefore rather surprising to read in the Financial Times on 13 January 2011 that "ITV can look forward to relief from its most onerous regulation after Jeremy Hunt, the culture secretary, said changes in government responsibility gave him power to reform or abolish it. Moments after telling a London audience on Wednesday night that he was unsympathetic to contract rights renewal - a limit on how much ITV can charge advertisers for its airtime - Mr Hunt said it was himself, not the business secretary, who had power to legislate it." (This transfer of responsibility to the Culture Secretary followed an admission by Business Secretary Vince Cable that he had 'declared war' on the Murdoch media empire.) Mr Hunt went on to say that the timetable for change would be linked to the planned Communications Act, which he hoped to have enacted by the end of 2012.