Earlier quoted context omitted.
It has been clear for a while that one of two things is true. 1) AI stuff isn't really worth trillions, in which case Nvidia is overvalued. 2) AI stuff is really worth trillions, in which case there will be no moat, because you can cross any moat for that amount of money, e.g. you could recreate CUDA from scratch for far less than a trillion dollars and in fact Nvidia didn't spend anywhere near that much to create it…
AMD is failing to recreate CUDA. Intel is dying. Who will step in as credible competition, and when? A trillion dollar question.
The danger for NVDA is their margins are so large right now, there is a ton of money chasing them not just from their typical competition like AMD, but from their own customers.