Business travel will take a hit but most business travel was BS anyway. I know from when I worked in the city, it only served as an excuse for me and my colleagues to get away from the usual routine and go and fine dine/wine in some foreign place at the company's expense. Very little was accomplished that we couldn't do remotely over the last 10 years anyway. With the opportunity now gone, people will be looking for a replacement excuse or they'll go crazy. So expect personal/private travel (weekend breaks especially) to rise as business travel goes down especially with the rise of WFH and people not getting out anyway. Contrary to popular opinion, you don't need lots of money to travel within Europe at least.