There will certainly be cases where business travel will be needed but there are also a lot of cases where companies have come to realise, through the pandemic, that a chunk of business travel is not strictly necessary. The factor that will focus the minds of a lot of companies, is the large amount of money that they have saved by not sending people overseas, especially as far as business travel is concerned, as the tickets are always pretty pricey. A lot of airlines obviously think there is going to be a lull in the numbers for a considerable time with airlines retiring excess capacity [even in modern airliners like the A380] and others re-configuring their interiors with more premium economy type seats instead of business class. Other carriers are "upping their game" to improve their business class offering, anticipating there will be a fight on for the fewer business class travellers that will still be flying. If you're lucky enough to still be flying around, you might find the service is better than pre-pandemic
