At least Telekom doesn't. I have an unlimited plan and use the three SIM cards for my home internet, my phone, and my iPad. Combined, I have hundreds of GB per month of traffic I use. I have the Magenta Business XL plan (not actually a business plan). It's LTE Max, so I get about 250MBps down, 50 up in Berlin. The same unlimited LTE traffic is now available as an 80EUR plan. Although to get to the same feature level (multi-sim, free international calls), I'd end up paying >100 again anyway.
Just looked at my home internet stats, that connection alone had 115.42 GB of download traffic over the past 5 days.
Just looked at my home internet stats, that connection alone had 115.42 GB of download traffic over the past 5 days.