Im not saying you are defending them, youre just missing a lot of stuff that happened around ai and nvidia in your comment and whatever genai we have now isnt all because of nvidia. That its locked to nvidia is because of what they did before ai hit public eyes.
Current genAI also has not much to do with nvidia besides programs being based on cuda which uses nvidia's tensor cores for neural processing. From a technical standpoint, nothing ai has to do with nvidia, they just played smart ( and unfair ).

That's fine but the money flows almost exclusively to the latter part, thus making it an economical bubble which will break soon

Yeah, but a tiny sliver of their valuation is attributable to the durable and real value of "AI" approaches.