I agree, a lot of successful organizations have a lot of roles a that are people focused e.g customer/partner relations or leadership within the organization.

for your other point, i don't think there will ever be a concrete best-practice system for all companies to use that will do away with the data wrangling/customizing that currently happens. Given the amount of time that most ERP systems require to implement/improve I think bad data will be around for a long time.

but AI/learning based decisions could (hypothetically) work in a similar way to the algorithms built by quants in high frequency trading.