A random idea - train one of those models on you, keep it aside, let it somehow work out your intricacies, moods, details, childhood memories, personality, flaws, strengths. Methods can be various - initial dump of social networks, personal photos and videos, maybe some intense conversation to grok rough you, then polish over time.

A first step to digital immortality, could be a nice startup of some personalized product for rich, and then even regular folks. Immortality not in ourselves as meat bags of course, we die regardless, but digital copy and memento that our children can use if feeling lonely and can carry with themselves anywhere, or later descendants out of curiosity to hold massive events like weddings. One could 'invite' long lost ancestors. Maybe your grand-grand father would be a cool guy you could easily click with these days via verbal input. Heck even 3D detailed model.

An additional service, 'perpetually' paid - keeping your data model safe, taking care of it, backups, heck even maybe give it a bit of computing power to to receive current news in some light fashion and evolve, could be extras. Different tiers for different level of services and care.

Or am I decade or two ahead? I can see this as universally interesting across many if not all cultures.