I think some people are open to learning from their mistakes, others aren't. Whilst the ratios might change, it would still be down to the individual to actually want to learn.

The only way you can learn from mistakes is by examining them in detail, that's just too much for some people.

Things, that by the time you realize are too late in your life span to fix.

Whilst it might be too late to rectify certain mistakes, it's never too late to learn from them. 😁

Cg