Hermes
I find the FUD machine unhelpful, but since we are considering 'interested parties' and their likely reaction to the potential for disruptive technology I think there are many and a significant element or elements may not be directly interested in financial gain whether by disrupting its progress or monopolising the market. Other interests include:
Political
Disrupting the oil, coal and gas industry with the level of unrest particularly in the middle east this may precipitate, may not be an option either the US and the West or Moscow and China would welcome right now.
Security
The possibility that Cold Fusion has been developed under a 'black budget' is an option. if this is the case then there may well be an understanding of the mechanisms (theory) and a realisation that such an understanding may give potential enemies an advantage unacceptable to current strategic thinking.
Either or both of these would precipitate an involvement by 'others' with the aim of halting or slowing down the development of cold fusion. The second one belongs to the 'conspiracy theory' category but not the first.
Best regards
Frank