There are multiple companies closing in on highly economical fusion. Enough so that they're receiving hundreds of millions of dollars of investment from very savy private investors. My money is on Helion getting there first.

Are you aware that tritium like hydrogen is very hard to contain as it's as small as hydrogen and very nasty as it's highly radioactive. That alone prevents this technology to become cheap any time soon (assuming they get Q>1).

None of the DT approaches are going to be highly economical, for fundamental reasons. I do agree that Helion is the least dubious contender.