There is actually already an ongoing collaboration between Wikipedia and Internet Archive to snapshot almost every single web page to Wayback Machine as soon as they are referenced on any Wikipedia site:

https://blog.archive.org/2018/10/01/more-than-9-million-brok...

The pages are being archived at a rate of 20 million URLs/week.

PS. This is not free. Internet Archive is one of those great online institutions that needs a steady stream of donations to buy the hardware that keeps the project going.