There's really no way that they could oppressively tax it.
If they wanted to tax the Internet, then they would just slap a tax on ISP and have them pass that on. Sales tax on online purchases is already in place in theory. They just don't bother checking it right now since it doesn't represent a significant drain. New York was the only one to lead the charge and force sites to ask.
To my knowledge, sales tax on online purchases only applied if there was a B&M store in your state?