If they ever do Apple and Google will offer it as a service built into your phone .
For example, you could say ok Google call that restaurant me and My girlfriend had our first date at 5 years ago, set up something nice so I can propose. And I guess Google Gemini ( or whatever it's called at this point), Will hire a band, some photographers, and maybe even a therapist just in case it doesn't work out.
All of this will be done seamlessly.
But I don't imagine any normal person will pay 20 or $30 a month for a standalone service doing this. As is it's going to be really hard to compete against GitHub Copilot they effectively block others from scrapping GitHub.