The game seems to be everyone else waiting for the R&D money to provide us amazing open source models, and then just run those locally.
My cynical take is that this is the US committing economic suicide, based on a misguided belief in something that'll never happen.
The new superpowers will be the EU, which was smart enough not to make the same gamble, and China, which will structurally survive it.
I also disagree with your conclusion of a moral imperative to make sure that AI succeeds. I believe it's the opposite. AI failing would finally create the long-needed revolutionary moment to throw off the shackles of the oligarchy that got us into this mess in the first place.
Not with how much pulling teeth is required to get them to invest in defense. I don't see how you can unironically make the claim that a written down investment would sink the ship that is the US economy.
A written down investment thats four times the size of the mortgage crisis.
Call me a buzzkill here, but my bet is you aren't gonna hit it big. While you can win at the casino, that requires a careful plan with contingency solutions, which AI simply does not have. Realistically speaking, it is indeed best to just not play this game; you are just digging a deeper hole.
As for defense, they are spending exactly as much as necessary at each point in time: just enough to keep credible US backing until 2025, and as much as they can without destroying their economy since. There is no good argument for an irresponsible spending spree, as the only powers that can realistically challenge the EU without triggering nuclear holocaust are the US and China anyways (Russia don't stand a chance).
We need political Aikido to hold this country together.
If you read the article carefully, I work hard to keep my priors and the priors of the people in question separate, as their actions may be rational under their priors, but irrational under other priors, and I feel it's worth understanding that nuance.
I'm curious where you got the writer "clinging to power and money desperately."
Also, to be fair, I envy Europe right now, but we can't take that path.