I think the point is that the pandemic has proven these solutions are a replacement for in person meetings. People might prefer to meet in person, but we now know and have evidence that they don't have to in order to get stuff done.
In any price sensitive market that will have a long lasting impact.
I agree your everyday travel for face-to-face meetings - the type I, as a programmer, end up doing - may be entirely replaced.
But if the travel was for sales? Can't take the client out for a fancy lunch via teleconference.
If you were travelling to do repairs or similar hands-on work? Can't replace the base joint on that robot arm over teleconference.
If it was a jolly, like when you send people to a conference in a luxury hotel in an exotic location? Can't have your executives spend the evening lounging by the pool drinking mojitos over teleconference.
If the purpose was to be visible, to ensure the people at the satellite office know they're as important to the boss as all the people at head office who see her every day? Might work over teleconference, might not, hard to say.
Are executives lounging in a luxury hotel really essential to business? Or jollies for that matter.
I think that things like repairs and technical visits are still a long way from being able to be carried out remotely, but the other items seem to be things that are non-essential.
Maybe it's because I work in web tech and not something more glamorous but I've never worked with anyone who actually liked being taken out for lunch by a salesperson. Everyone knows it's all fake. The client knows that they're paying because the cost of the lunch gets added to the price. The salesperson knows the lunch isn't actually going to swing a deal their way. I don't really understand why people go through with it.
If I employed someone who was willing to sign a contract because they'd had a fancy lunch I'd be skeptical that they're capable of assessing a purchase properly.