But every few months (weeks?) I see a post by a founder-type essentially trying to mine the Hacker News collective brains for startup ideas. It doesn't work that way. The best startups are ones that solve a pain point you yourself have experienced.
The idea of a savior who comes in and solving the major problems of an industry they have never worked in is not a myth but close to one. (Elon Musk being a notable exception with cars and space flight... but he has the capital to attract domain experts to fill in the gaps)
I'd point out the problems in my industry except I am actively working to solve them :)
With that said. Don't let a "know-it-all" on HN (myself included) tell you what to do. If you want to tackle a hard problem in an industry you don't have experience in, please do. You might be the next Elon Musk, I don't know you so I don't know.
If that wasn't your goal with this question... again I apologize.