This is more like "Fusion physicists rally around plan to improve message asking for more money". It's not like there's a serious plan to build a power plant.
Except at Lockheed's Skunk Works, which is quietly plugging away on their own.
The skunkworks program has no published details and what has been published has been put in the “been-there, tried that” category by physicists. The slunkworks program is little more than a way to funnel money.
If you read between the lines, the private companies got their wish: a change in emphasis for the federal program toward doing the supporting work on nuclear materials science that (for example) Commonwealth Fusion has been suggesting.
The other wishlist item is to build support for doing cost-share programs with industry to implement the larger facilities. If this gets traction, then the government wouldn't actually build the power plant, it would be more like NASA COTS where they help sponsor private companies that actually carry out the work. The INFUSE and ARPA-E fusion programs are tentative steps in this direction.
Edit: BTW, rallying around an improved pitch is big deal for the federal fusion program. Budgets have generally been in decline ever since it peaked in the 70's, and for many years there was nothing much in terms of a vision for the next steps.
Except at Lockheed's Skunk Works, which is quietly plugging away on their own.