Judging by these comments and my own results, perhaps this is a joke. We see these ideas turned into enterprises/ventures all the time. It's as if the people who come up with them are unaware of the fact that these things have been done many times before. Even with that knowledge, some people have motivations to do the same thing again - maybe because it looks like it could be profitable, maybe for the prestige, who knows? At face value, some "launches" seem more like "rehashes", but I can't tell if that's the author's cynicism or my own.
> A company that turns your Spotify playlists into a radio station that plays similar music based on your tastes.<p>"It's like Spotify for Spotify."
Almost all of the nonexistent ideas I saw have companies that service them…<p>For example, it thinks there’s no website which, given available ingredients, suggests recipes.
> A company that creates educational material for children.<p>(looks up school textbook publishers.)<p>> A company that lets you rent out your car's battery when you aren't using it.<p>I don't see that one happening. Ever.<p>> A website that lets you order and purchase local food in your area.<p>You don't watch TV, do you?
> A website that lets people order their groceries online and then pick them up at a central location.<p>Side note, there was one time I "sold an idea" to a website unrefundable for $99 that was hilarious, in the process I overdrafted my bank account too, ahh. Props to the person that made that site.
* some of these ideas may actually exist.<p>See also <a href="https://thisxdoesnotexist.com/" rel="nofollow">https://thisxdoesnotexist.com/</a><p>Also, I think the literal HN audience may be missing the point that this is an ideation tool. A starting place.