Well the last was sarcasm, but for real we'll never see this power source being used for electrical power and such. Too many jobs and money at stake. There is an unwritten rule that goes like this: If you invent something that will significantly impact the world's economy, then it will either be squashed, bought out, or forced to move at a slow pace as to be unprofitable (hydrogen fuel cells).
Yes! That explains why petroleum was quashed by the whale oil industry. And why the railroads were quashed by the stage coach industry. And why the automibile was quashed by the saddle-makers & blacksmiths cartel. And why xerography was quashed by the mimeograph industry. And why the fax machine was quashed by Western Union.
Didn't pick up on the sarcasm, my bad. I do think you're wrong about the application here, though.
The potential gains to whomever broke the international conspiracy against fusion power (and become the monopoly of cheap clean inexhaustible energy) would end up so filthy rich, there would be a mad scramble to avoid being the last one on the gravy train.
Hydrogen fuel cells are slow to catch on largely because they're horrible as energy storage. It takes alot of energy to store a significantly lesser amount of energy in a hydrogen fuel cell. Hydrogen is also extremely unstable and quite flamable (see Hindenburg).
The exception proves the rule-- gas/electric hybrids have met no resistance from the global oil conspirators, and car companies are rushing to come up with real competitors for the very successful Prius. Hummer, on the other hand, stands to lose millions of dollars in revenue this year because of gas prices.