If you run a company or companies on two coasts and have a wife and family on another continent (say she has her own career and can't move), then what exactly are you supposed to do?

I don't know this guy's personal life, but the people I know who fly tons fit into this profile. E.g. the wife can't move because she's a tenured professor at her university, and he's got to be at both offices regularly. He's best qualified to run the company/companies, and he's not going to get divorced to reduce his CO2 emissions.

What exactly is the solution you propose? What personal responsibility do you expect them to take? You think he should get divorced? Only see his wife and kids four times a year? Have his company/companies suffer because he can't be there in person? Quit his jobs?

And let's be clear, there are lots of jobs that require tons of air travel. If you're a highly specialized repair technician for certain equipment, all you do is constantly fly around the world fixing equipment wherever it is. If you're a CEO of a multinational company, you're constantly flying around to different offices. Are you looking for "personal responsibility" here too? How?