Both examples you provided are very clearly not the same as AI or Internet aka transformative technologies.

You literally can’t limit “post-singularity” benefits to one thing. that’s like saying “cure to cancer”. sure, there may at one point be a singular cure to the thousands of diseases called “cancer”, but there’s still going to be individual cures that are immensely helpful. open source stable diffusion vs openAI Dall-E is a great current example of why you can’t possibly expect this technology to be limited somehow.