They don't, actually. This is a technical issue. To be clear, I'm speaking to you from a legal technical perspective.
There are three circumvention provisions within the act. One says you can do it yourself—direct circumvention. Two says service providers can circumvent. Three says you can sell devices that help to circumvent. The bill only deals with one and three. It does not have an exception for two. There's actually a gap in the bill—