Literally every company I worked in assigned name.surname@company.com, I don't know why people would complicate their life by doing literally anything else.
I mean yeah, but it happens even more with the naming scheme in the original post. Most companies just add a number when that happens. Predictable naming schemes, at least as the default, make it a lot easier to find people in large companies.
Sorry, I meant professional company emails. Obviously people can make up whatever private gmail account they want. And people can state their preferred name, but the fact that if I call my coworker "Josh" and their last name is "Jacobson", the fact that I can type in Josh.Jacobson and find them is extremely helpful, and I don't get why companies would complicate that by making it "jojacko" .
Company I most recently joined gave me name.surname1@company.com. Unfortunately there was someone else with the exact same name combination. Feels bad man.