> Having opportunity doesn't mean they will seize it.
Well, in that sense everybody has opportunity. But I know quite a few people who definitely would not survive their line of employment shutting down. A lot of them have invested decades in their careers and have life complications, responsibilities and expenses that stop them from simply 'seizing opportunity'. For them it would be the end of the line, hopefully social security would catch them but if not then I have no idea how they would make it.
Generally speaking, yes. I do understand not everyone has the opportunities for life circumstances beyond their control. So I don't want to belittle that.
But speaking in macroeconomics, most people have the capacity to readjust if needed. I had to do so these last few years (and yes, am thankful I am "able bodied" and have a family/friend network to help me out when at my lowest points). And the market really sucks, but I eventually found some things. Some related to my career, some not.
But I'm 30. In the worst worst cases, I have time and energy to pivot. The opportunities out there are dreadful all around, though.
> most people have the capacity to readjust if needed
I am not so sure about that. I know I can. But I also know that I'm pretty privileged, where most people are not.