For cam models, it's more like the last chance to stop ISP from messing up your profits/bushiness.
If ISP get to charge more, you will need to pay more to be able to stream. And your viewers are going to need to pay more to view you. And your choice of websites.. well they to will need to pay more. You paying more, your customers paying more, the websites paying more, it's all going to cut into your profit.
Worst case, ISP could choose to block and or cripple a site completely. They may decide they don't want cam sites on their network. Or they may decide they only want to allow their cam site that splits the profits between you and the ISP.