We are a success
When the audience was polled for how many people worked in a NY start-up, a massive amount of hands were raised. When asked how many of these start-ups were hiring, a majority of hands were raised again. The point was shown and explained that we are a striving tech scene and are bring job opportunities to NY.
We- the job creators- are fighting against intrusive government regulation
It's been mentioned, most notably in the reddit blog post by alienth, that there will be a burden on the tech community, and especially the smaller start-ups, in keeping up with these legal requirements of censorship.
We are anti-piracy
One of the speakers at todays NYTM protest (I believe it was Alexis Ohanian, but I could be wrong) mentioned they are a copyright holder. They don't want to see piracy, nor copyright infringement - but they also don't want to oppress innovation.
Innovation is better
Pretty much the same counter argument as above, and it was also mentioned that the MPAA was scared of the VHS back when it was introduced; citing that it would ruin them - but instead it became a large part of the movie industries revenue model. The point was made that they should be embracing the internet and that with those innovations they can make boatloads more money without having to censor us.