That is where the other pieces of meat come into play. Many of us don't want the Grade B cuts when we can have Grade A. Besides, historically, once a monopoly; or duopoly in some cases; gets in and takes over, that's when they then ratchet up the prices even further and offer less to the paying public while pushing all the locals out of the game plan.
I'm going to ignore the fact that you seem unable to understand that your OPINION that the 930 Club is fundamentally better then every "corporate" venue out there is a small, minority opinion not shared by the majority of consumers, first of all.
For the sake of argument, let's say you're right on that. The 9:30 Club and the experience with attending it is better then attending a similar LiveNation owned venue. It is Grade A meat, as opposed to Grade B. Do you want filet mignon instead of Taco Bell ground beef? OK, that's your prerogative. Are you willing to pay slightly more to have it? Again, super. If this legislation passes, it is not as though the police are going to come the next day and put yellow tape over the 930 Club's doors. They will still be open, and if you want to go, great! And if average ticket costs at 930 club are, I dunno, $30, and at a LiveNation venue, $25, then you and everyone else will have the absolute right to pay the $5 more to see a show there. And if enough people want filet mignon, then both can co-exist. And if too many are willing to settle for Taco Bell ground beef, then that's the unseen hand of free market economy at work. But fighting to not letting people have options and make their own choice just because you fear your choice will be so massively unpopular that it won't remain financially viable is just selfish.