And what, exactly, is replacing them? What else can convert a digital document to paper form?
The printer at work, which is free and convenient if you work in an office.
Or the one at the local copy shop, which is 10c a page. I probably spend ~$1/year printing out forms, there aren’t that many left…
For the rare cases you need something printed you can use a dedicated print store / office store with printing or the local library. There is no need for the average person to need a printer anymore.
Here paper is king still, and its usage is going up (compared to the rest of the Europe). You need to deal with some bureaucracy's? Register on their internet site, they'll send you an OTP in mail. You might be able to do some things online, most of the stuff are tight letters sent to your mailbox.
Even better, some offices still require you to use a fax machine. Good luck, if you're 20something and never used one. I'm almost in my 40s and 2019 was the first time in my life I needed a fax, in Germany.
And I highly doubt the usage of paper will go down in anytime soon here...