I don't buy that.
People who are actually able to work from home (most aren't; they just muck about) are upper/middle class employees who already have all that gear.
The biggest problem has been hoarding, by mid size and above (whatever that means) companies. Plus a lot of opportunistic cowboy activity.
Because nothing encourages productivity like commuting, bag lunches, delayed dinner, noisy bright environments which are full of distractions and encourage headaches and water cooler babbling. [/sarcasm]
I am significantly more productive at home, more likely to work after dinner and before breakfast much more likely to stick around.
Consumer demand was increasing before 2020. Things like cars and watches have more electronics in them, people are buying more of them and they are replacing them more often.
Even pet food bowls and lego have become electronic. Used to be very simple, just plastic, then they added programming, cameras, laser pointers, etc. Each time they add a feature, some people replace their 'old' one.
E-waste totals show evidence of this. As did shortages of capacitors, etc before 2020.
Another contribution to the increasing demand is the fact that our seniors who grew up before computers are less interested in electronics than the younger generations who are replacing them.
On top of all that, 2020 came around and people spent less on eating out and travelling and more on electronics. It increased the increase in demand.