One of the problems with the cloud-polling integrations is that they will frequently poll the back-end APIs to get the current status of that device. A normal user might only open up the app once or twice a day and call the APIs, but these integrations will go 24/7 every 10s-5m. That can add up to a non-trivial amount of traffic. If there's 100 users opening it up once a day, that's not a lot of traffic, but 10 users polling every 1 minute is equivalent to 15k people doing something once a day.
I actually saw one of my integrations I used defaulted to updating every 10 seconds. I decreased that because I didn't want to draw attention to it.
A business will look at their usage and ask why there's more than expected traffic. They could be running their server on a potato. They could go back and support Matter, that costs money, requires skilled engineers, and cuts into profit margins.
While it sucks, that is something they could point to in a court about "economic harm".