Finland has unlimited (without the quotation marks) data on prepaid SIMs from all carriers. Usually for about 1€ per day or 20€ per month. Depending on the plan it will also include unlimited texts and talk.
That sounds miserable. Give me a good cold winter with snow rather than a miserable non-winter that is damp, wet and slushy. Dry cold is far better than than damp thaw weather.
Why always the focus on free Wifi? Germany, like most of Europe, has good 3G/4G coverage. Rates are reasonable, so you can provide your own connectivity. Far more cheaper than renting a space just to get free Wifi.
That doesn't mean that the German laws about liability for offering connectivity don't suck.
Cellular rates in Germany are pretty high. On a recent trip I was shocked to find out that prepaid mobile data is roughly 10x - 20x more expensive than in neighbouring countries.
15-20€/month gets you 1-3GB of traffic from a cheaper operator like 1&1. "Premium" operators like Vodafone start at around 30€/month for 1GB. Whether you find that reasonable depends on what you compare it to (I'm used to 10€/month without traffic limits), but either way those traffic limits are nowhere near enough to replace free Wi-Fi for work purposes.
I pay 39 EUR/month for 40GB of data with free roaming in Europe and the US. Unused data carries over up to 80GB on top of the 40 included. So you can travel around with about 100GB of data which is significantly more than you get in Germany for that price.
For example:
Fremdschämen To be embarrassed by something somebody else did German
Myötähäpeä in Finnish (alongshame when literally translated)