try asking for chocolate chip cookie recipe on chatgpt, it works awesome already.
The only issue i see is I can't verify in general if the recipe is accurate (like all things ChatGpt outputs). But these cookies i just happen to know are correct
Work in many roles in different parts of different business in the industry for 10-15 years to gain insight into how it works, what makes it valuable and the fundamental challenges it faces.
Go to many conferences to find where the smartest people are and how they are fixing the hardest problems. Meet the important people everyone knows in the industry who can help you navigate it.
Get to the top 1% in one of the skills which is critically important to your industry, so you can grok opportunities before others.
That might get you to the starting point. You can't just google "howto disrupt space".
If it's for practice or portfolios I tend to suggest people solve problems which have already been solved. Find a SaaS service which already exists and just write your own naive version and open source it. Trello, Hacker News, a doc viewer, etc.
If you're looking for a problem to work on which will allow you to sell your solution later on, that's a different kettle of fish.
For me, the number one issue when learning a programming language is motivation so I chose to pick a problem I personally need solved so I'll feel the need and have the motivation to see it through.
