Correct. More specifically a finance expert with enough understanding of programming to communicate clearly and plan collaboratively with programmers would like

Correct. More specifically a finance expert with enough understanding of programming to communicate clearly and plan collaboratively with programmers would likely be more valuable than anything they could become as a programmer. This is particularly true if as you say you're already in management. (Mainstream IT management of projects intended for skilled users outside of tech is still typically a disaster.) An expert individual contributor (some sort of trader?) in a high value finance niche might be valuable if they combined skills and wrote code for their previous role, but by management level your equivalent peer in tech may well be a dev manager. The role you are likely to be most valuable in is straddling a finance management position and what tech would call a product owner. And, yes, as you seem to understand, your peak value to a company would likely be planning systems that would ultimately automate/destroy the jobs of of many of your previous peers and reports. The combining of domain expertise is the key, if you're a success in your mid 30's you need to use what you have, not replace it.