It's already been noted that live streams are readily accessible by a theoretically unlimited number of persons in the general public, most of whom will find the price tag of said receivers to be exorbitant and not worth the investment.
As has already been noted, persons listening to Internet rebroadcasts need to invest no money of their own into a receiver, nor do they need to undergo what would be defined as a rather cumbersome process to program the radio, to say the very least, to someone unfamiliar with these scanners. The iPhone and similar multimedia-enabled smartphone applications that have been previously mentioned add to these concerns. Following the laws of supply and demand, the price system always excludes some potential buyers who are unwilling or unable to pay the asking price for the scanners. Why would I purchase an expensive scanner when whatever I want to listen to is available, free of charge, from a static Internet stream? I can listen at home, at work, and on my smartphone without the tenacious programming headaches.
To add to all of those POSSIBILITIES, proposing some sort of legislation that specifically targeted the possession of scanners in the home would be preempted by federal law; targeting digital, mobile scanners wouldn't address the rebroadcast issue. Finally, targeting the possession of digital scanners by any venue would likely ignite fierce opposition from more organized, seemingly 'legitimate' users, e.g., the mass media, emergency management, other public safety agencies, etc.
Therefore, one can logically conclude why, most likely, the rebroadcasting of state police communications is specifically targeted by this bill. However, the only persons that can definitively tell us the ultimate reasoning behind the exact verbiage of this proposed legislation are not likely to be replying to threads on this forum, so this seemingly endless series of polemics distracts for discussing how to best address the concerns of the scanning community as a whole. My kudos to the CARMA group for providing a most exemplary example of how to contact your state representatives and make your opinions clear on this legislation.