This means there can't be any "impedance" mismatching that can be used from one service to another. For example, one company gives out the last 4 digits of the credit card, and the other uses the last 4 as security info.
What we need is a uniform security standard and training for ALL customer support personnel so that you can use Apple to break into Amazon, or Digital Ocean or Namecheap. The staff need to be trained to never succumb to social engineering ever, and in fact make it impossible for 1st line support to reset anything. Have any security information get passed up to second tier support who are extremely well-trained. Etc.
And have this standardized so that there is incentive for customers to look for this certification so that we don't have to keep suffering the same mistakes over and over again.