I think discussing topics like this should be encouraged throughout all phases of our life and shouldn't be left til so late. I understand we struggle talking about our mortality but this situation sounds like an all too common nightmare.
There should really be some kind of public program to help people fully understand the process and encourage them to get things setup well ahead of time.
It becomes almost disrespectful to the dead when families fight over their estate. Would make them wish they gave it all to a cattery to spite the family.
Years ago I started out as a financial adviser, one of the first things we were told to always recommend was a will and estate planning.
Too many people would reject that as it was uncomfortable to talk about for them.