The kind of stuff you need to be in person for tends to be the stuff that doesn't give you the advance timing to plan travel.
Singapore is 8h nonstop from Sydney. Tokyo is 9h. Los Angeles is 13h. Qantas was considering launching a 20h nonstop to London before COVID.
It‘s a much better value prop than halving transatlantic travel time, which is 6h, the smaller side of a reasonable sleep.
I work at a place that doesn't pay for anything beyond basic economy for business travel, which isn't that uncommon of a cost-cutting measure. I'm definitely not going to be able to expense expensive in flight wifi. To say nothing of work productivity on a cramped tin tube.
At least one of the startups working on it has promised comparable or lower per-seat mile cost, and has orders on book: https://www.thedrive.com/the-war-zone/36952/boom-rolls-out-i...