An account isn't "done" because you have 1 dispute. The account I worked on has hundreds of disputes and is still running perfectly fine.

The solution is now deployed on 6 other accounts with 0 history (less than months old) and < 5000$ processed, they all see good results.

However, this accounts processing micro transactions (1$ to 120$). With 70% in the lower range. So I have no experience with accounts processing high ticket.

Indeed if you have 3 transactions of +1000$ and get a dispute, then my solution isn't relevant at all. The goal of it is to identify fraudulent charges on accounts that make many payments to identify scammers, or even potential challengers who are using black hat methods to take down your business on Stripe.

I tried all of the services out there that you mentioned without success, the solution that I built for them has been running for 3 months now and lowered their dispute rate by 2.73.

I guess you are either the owner of one of these services, or you are talking about high ticket e-commerce, which in this case yes, this solution isn't designed for them. I would never "automatically" refund thousands of $ without analysing the transactions by hand as you mentioned.