86% of German companies employ 10 or fewer people [1]. I'm not why we would expect them to use online collaboration tools or video conferencing pre-pandemic?
Fax still being common is true though, it's mostly used as a quicker alternative to mail with established legal standing and more convenient than rolling out electronic signature schemes. You can still live and work without a fax in Germany, you will just be sending more letters. I've never sent a fax or letter to a German cloud provider though (despite using several of them)
1: https://de.statista.com/statistik/daten/studie/1929/umfrage/...
Not proof. The question was about cloud companies.
The second part of the comment yes. The first was about how pervasive the use of fax was within German business. But in Japan it's worst:
"Japan’s reliance on fax machines lambasted by coronavirus doctor": https://www.independent.co.uk/news/world/asia/coronavirus-ja...
"Japan Can't Get Rid of the Fax Machine With Offices Demanding It Stays": https://www.insider.com/japan-cant-get-rid-the-fax-machine-o...
"...Two-thirds of German companies regularly use faxes, whereas only half of them use video conferencing technologies, and just one-third use messaging services or online collaboration tools..."
https://www.handelsblatt.com/english/companies/digitization-...