When will virtual reality systems be ready to replace almost all business trips?

Head-mounted displays could give you the feeling of sitting in the same room with your business partners. Less business travel means less CO2 in the atmosphere and less wasted time during airport security checks and by being stuck on airplanes. On the other hand, powerful computers will also require more and more energy i.e. they also produce a great deal of CO2. And maybe what’s more, people will still feel the need to meet business partners for real, don’t they?