Why hosting providers hate IRC?

Hello everyone.
I open a post on "Why hosting providers like to use Maxmind to judge "Fraud" " last week and got many responses which quit help me a lot. ( https://www.lowendtalk.com/discussion/comment/2872894 )【thank you】

Now I want to ask for another question"Why hosting providers hate IRC"?As we all know, IRC is usually prohibited by AUS, but why?

I can understand BitCoin farmer should be prohibited and using a lot of disk is unethical. But why IRC should be prohibited?

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