Anybody who thinks business travel can just transfer online doesn't understand business travel. Newsflash, the internet has been around for years, and yet there were still 30+ flights a day between London and New York pre-Covid. You don't secure multi-million pound sales deals on Microsoft Teams. Aside from business travel for meetings and sales, a vast amount of people's business travel is commuting. My chiropractor commutes from Denmark, he cannot work from home.
Helipixman, just because you can't understand why people need to travel, doesn't mean that people don't need to travel. Quite frankly, it's not your place to judge people's decisions on travel. Heck, even the FCDO have a very loose description of "essential travel", and state that it's ultimately at the discretion of the traveler to decide what counts as essential. If more people would stop sticking their oar into other people's life choices, the world would probably be a happier place.