It's been all dreaming, all along.
Tokamak dreams are just the fever sort: extracting energy from a Tokamak fusor will necessarily cost overwhelmingly more than from fission. But fission is already not competitive, and gets less so every day. Fission could, in principle, deliver not unreasonably cost-ineffective power, but not in the US where its construction mostly delivers tax money via political patronage, with a sideline in grid power, maybe, someday. Small nukes might sidestep that system, but they have a hard time drawing capital in competition with the now reliable graft conduits.
Helion is interesting for its direct "aneutronic" electromagnetic energy extraction route, but dependent on a supply of Helium-3 that it will have to breed up from side deuterium-deuterium fusion. That one, anyway, might work.
But most of the dreaming right now is of the venture capital sort. Billions of dollars will change hands, for years, without a solitary watt-hour pushed out to the grid, while solar is built out as best it can absent those $billions. The more solar and, soon, storage is built out, the lower the price target the fusors and small-scale nukes must compete against.
It is not all gloom for them: they don't need to match the price per watt of peak output from solar, but something like three to six times that, because they only need to match the price of power delivered from a storage system that was charged up during the third of each day when solar is producing well. The odds-on favorite storage systems (favored first for cheap build-out) are not especially efficient, delivering round-trip maybe half of what was put in.
As intermittent solar picks up an increasing share of power generation, some industries will increasingly adapt to maximizing power use when it is cheapest. Those industries won't buy much of more-expensive power, but will instead wait for it to be cheap again. Prime examples of this will include hydrogen, hydrocarbon, and ammonia synthesis from water and air feedstocks, but even steel and aluminum production. Warring against this tendency will be debt service for capital equipment not making money sitting idle. Economic analysis will choose at what prices to start and stop production.