Are you even reading my posts at all?
Well, to be honest, not really. Mostly you sound like you are quoting wikipedia or something. It comes across as uninformed factoids.
I take that to be a sign that you do not have access to real research or real researchers other than what you find outside of paywalls.
So, I don't actually fully engage with what you are saying. I pretty much am writing off the cuff when responding. I don't give it a lot of thought, sorry.
Bottom line, there is no machine that has demonstrated Q>1 after decades of trying.
Understanding how to put together a Q>1 machine is STILL the primacy of research.
Any "research team" that professes they are skipping to the end are engaged in misleading marketing in pursuit of backing.
Even once we can demonstrate Q>1, the ability to build a viable machine in support of mankind remains suspect at best given the knowledge gaps in materials science and engineering to do so. It is well the probability that ITER and the follow on DEMO will see further delays in order to allow science to catch up to the concept.
As you peruse the glossy brochures, you can't seem to fully grasp just how hard this problem is. Even the best contender from a proven science standpoint for compact concepts is at best a <50% probability of success for the next stage which will demonstrate theoretical Q>1 conditions. No other compact project has published data or accomplished experimentation to support a similar or better position for next step. You seem to have a lot of misplaced faith that is not backed up by real science on the table.
Best bet overall, ITER to DEMO backed up by existing research plants (JET, JT60, etc.) doing plasma management and materials work in an effort to mitigate knowledge gaps in time for ITER and DEMO.
Next best bet, based on demonstrated science: Polywell with its next step to demonstrate (e-) efficiency sufficient to support Q>1 conditions. Not guaranteed, but with a less than one magnitude single step chance of success, which is better than the rest.
How close is any other compact project to demonstrating conditions for Q>1? And how do you know?
All the worrying about maintenance and cost is pointless without a workable or working machine. Prove the principle, then see how you can manifest it in the market.
The development of atomic power, though it could confer unimaginable blessings on mankind, is something that is dreaded by the owners of coal mines and oil wells. (Hazlitt)
What I want to do is to look up C. . . . I call him the Forgotten Man. (Sumner)