I wonder how people feel about making other aspects of their lives remote. Attending remote conferences? How about remote vacations? Remote schooling for their kids?
I loved going to conferences because the setting seems to often attract people that exactly are not the always-on-always-busy people, and you can go from tech talk to chitchatting back to tech talk. Also it was always a good excuse to visit another city and maybe add a day of sightseeing, or just break the habits the of every day work.
I miss in-person conferences and I don't see myself participating in a lot of online ones. You have all the problems of bad cameras, bad microphones, bad remote conferencing software. Totally willing to accept these in order to save 30-90 minutes of commuting every day, and you can get yourself suited in your team... but not willing to accept that for twice a year events that used to be awesome and fun.
Guess I have to clarify that I'm 95% happily WFH since March 2020 and I see no problems, given the right team and circumstances. I'm not one of these super extroverted people, but I do love conferences.
Do you want them to put out free content that took a lot of money to co-ordinate and produce or do you want them to spend a lot of money setting up a paywall for access that very few people will buy?
The cases where this probably isn't true are going to be the conferences like Debconf or BSDConf. Mind you, these conferences have been hosting all their sessions on youtube for years.
But if you are serious about your question, please look at the context of each of these: Vacations are often defined by being in a different place. Working, however, is defined through achieving some result - for IT work, there is no necessary, physical "location" attribute. And if they have different relationships to a physical location, it isn't fair to compare them as if they did.