The nuclear industry is lobbying for relaxed restrictions on what they can put the trust funds' money into, obviously hoping that riskier investments will make up some of the shortfall. This will probably make the eventual decommissioning even more expensive, since these reactors weren't designed to be used as storage facilities. There's another problem with that plan. Because nuclear power plants need some place to discharge the water that cools the reactor, they're all situated near large bodies of water-usually rivers. Rivers flood at least every hundred years, which is a fraction of a second compared to the half-life of radioactive waste.
Lakes can flood too, given enough rainfall.
One way or another, the decommissioning of all these reactors will have to be paid for. It's not likely the utilities will cover the costs themselves. Theoretically, that is. A few practical design problems crop up when you try to build a fusion reactor smaller than the sun. Fusion research has been going on for more than 40 years, but even its most optimistic proponents admit that commercial applications can't be expected until the middle of the next century.