> 3) People (primarily women) not being able to return to work because of child and elderly care.
I think that one is key, BUT primarily because I also think that one is not likely to recede as quickly the other causes will.
I think many people with young children, where both parents worked, and one of those parents was in a relatively low wage job, realized that it actually made more financial and "mental health" sense to have that parent just quit and take care of their children full time. With as expensive as childcare is in the US, people realized "Why am I completely stressing myself out, having someone else raise my kids, when I earn X, but something in the neighborhood of .8X goes to childcare, expenses for having a job (commuting, work clothes, etc.), and taxes. I'd rather have a slightly lower standard of living without having to deal with a bullshit job and having so little time with my kids."
I believe that dynamic is one that has staying power. All of the other fantasies ("people are standing up to the man and saying they won't come back until wages increase") will face reality once people's savings run out and they realize they like having shelter and eating.