AI/ML barrier to entry is far simpler and vastly user friendly compared to crypto. Instant value return or gratification from ML products (GTPs and rest) is far more mainstream friendly.
Another view is the "loss" factor. Nobody, thus far, has has had their funds stolen or lost using ML products. I understand content creators and those who, unwillingly, contributed knowledge to learning systems did get circumvented but i'm talking about users/customers. Compare that to the negative stigma of crypto frauds and stereotypical association to illegal transactions.
Apples vs. rotten oranges in my opinion!
The killer app for generative AI is going to be propaganda. This hasn't entered the discourse yet because nobody wants to advertise that they're running a propaganda mill. I suspect they already exist though - there've been a number of news articles I've read recently where I'm like "I'm pretty sure somebody fed a tweet or police blotter into GPT-4 instead of writing this."
This works now because people are accustomed to trusting what they read. Once the channel has been flooded and it becomes cheap to make it look like your views are echoed by 1000 mainstream news media outlets and millions of people online, people will just stop believing everything they read. Similarly once any idiot can have ChatGPT write a college-level term paper, the skill of writing at the college level won't be worth anything. When you can have ChatGPT write a recommendation letter with a 15-second prompt, it ceases to be a useful signal for how much you believe in the person you're recommending. When you have GMail expand your one-sentence e-mail into 4 paragraphs with generative AI and then the recipient summarizes the 4 paragraph e-mail back into one-sentence, maybe you should've just written the one sentence to begin with.
The value in blockchain technologies is in unforgeability, scarcity, and forced consensus. In a world where forgery is trivially easy, content is trivially abundant, and nobody believes anybody else, a technology that ensures that mutually-distrusting computer systems all represent the same data gets quite valuable.