1) A third party app simply cannot compete with Google Maps on coverage, accuracy and being up to date. Yes, there are APIs you can use to access this, but they're expensive and limited, which leads us to the second problem:
2) You can't make money off them. Nobody will pay to use your app (because there's so much free competition), and the monetization opportunities are very limited. It's too late in the flow to sell flights, you can't compete with Booking etc for hotel search, and big ticket attractions don't pay commissions for referrals. That leaves you with referrals for tours, but people who pay for tours are not the ones trying to DIY their trip planning in the first place.
Similar to "made for everyone" social networks and video upload platforms.
But there are niches that are trip planning + there are no one solving the pain! For example Geocaching. I always dreamed about an easy way to plan Geocaching routes to travel and find interesting caches on the way. Currently you gotta filter them out and then eyeball the map what seems to be nearby, despite there, maybe, not being any real roads there, or the cache is probably maybe actually lost or has to be accessed at specific time of day.
So... No one wants apps that are already solved + boring.
Did the author come up with the main ideas, character arcs or plot devices himself? Did he ever seek assistance from AI to come up with new plot points, rewrite paragraphs, create dialog?
The only thing which really matters is trust.
(I don't have an answer, just wondering.)
So this is the thing that Zitron and Doctorow are always talking about? Naked grifting in the AI industry?
Why? Can't it be done same way it's done with copyrighted material: by checking the authors process?
(Because at least in EU law permits writing basically same thing, if both authors reached it organically - have a trail of drafts, other writing process documents. As long as you proved you came upon it without influence from the other author.)
Proving that you done it without AI can be similar. For example - just videotaping whole writing process.
Now, as for if anyone cares about such proofs is another topic.
What I forsee is a future of "local" AI engines. I think Apple is waiting for its moment for when people will ask for private-offline AI tools + a lot of smaller companies will follow. It won't be a huge success, but it will be popular in HN and in tech savvy crowd.
Ofc, it's only a personal prediction.