I envision a world where a portion of senior workers -- 40%, I would guess, based on vague approximations of folks who prefer in-person or hybrid work -- work in office, with mentorship representing a huge portion of their responsibilities. Junior workers probably ought to spend at least a year or two in office to acclimate to office job life; high performers can escape once they've proven their abilities.

That being said: I wonder how much of remote work preferences are actually a result of affordability and quality of life issues in cities, especially in the USA. I would have no problem working a hybrid or even full-time in-person gig in an office... if I could afford to buy a house, walk or bike to work, and live in a quiet, clean, interesting neighborhood. Being paid a decent salary in tech that should be possible, but it's really hard to manage in the USA at the moment for most definitions of quiet/clean/interesting. And before anyone claims that cities can't be "quiet" or "clean", I've spent enough time in nice European cities that do satisfy all three criteria to know that I'm not just being overly picky. Even if I had a million dollars, I doubt I could satisfy those criteria in the USA.

Anyway, as long as we're stuck with an imperfect housing market, remote work is such a blessing. I'm sure it's helpful for some junior workers, too -- if you don't have to move to a $2k+/mo apartment in a major city straight out of college, you'll have a much easier time paying off loans and saving up money early in life. I suspect that's opened a lot of doors for folks who previously couldn't work the most prestigious tech jobs.