Having worked in quantum computing, I think we'll get fusion first. Essentially the problem is, all of our scalable quantum architectures are really just mathematical models. There's scant research on actually building anything larger than about ten qubits. When you consider fact that error correction means you probably need about 500k physical qubits to do anything interesting (at least!) and as I like to joke even if we followed Moore's law it would take 32 years or so (and I doubt QC would scale so quickly) so not anytime soon.

But that doesn't mean it's "frustrated". There's a lot of progress being made. There's just a long way to go. Quantum algorithms are hard.

Fusion guys have always claimed they're underfunded w.r.t. experiments and in fairness fusion does get kinda hot so I could see it being expensive.

https://commons.wikimedia.org/wiki/File:U.S._historical_fusi...