Ok, so everyone says I'm wrong, here I'll prove you all wrong.
The jailbreak on the iPhone itself is protected and always has been thanks to the little law exception called DMCA, with explicit emphasis on this section:
Computer programs in the form of firmware that enable wireless telephone handsets to connect to a wireless telephone communication network, when circumvention is accomplished for the sole purpose of lawfully connecting to a wireless telephone communication network. 17 U.S.C. 1201(a)(1) Librarian of Congress
This is the main reason why Apple can't go against the Dev Team or any other team. Unlocking and the road to achieving the unlock is
protected by law.
On the PS3, there is no unlock to achieve so there is no protection for jailbreaking. Now, as protection of jailbreaking is concerned on the iPhone, it will continue to be protected since the clause I mentioned above, has be ratified again for the next 5-10 years.
Oh sure, piracy has become a problem on the iPhone OS ever since Installous came to life; however, before the iPhone OS got the App Store, there was
no problems with piracy in the iPhone because all apps were exclusively and solely for providing productivity. Furthermore, the by product of jailbreaking was the ability to install apps to it.
Remember, jailbreaking was developed as a means to write to the OS in order to achieve a method to by-pass AT&T Activation and eliminate the lock. However, people saw potential in the iPhone OS and hence we got all the wonderful apps from early iBrate, to famed Labyrinth game or any other apps we all remember.
Sony on the other hand is
not bounded by the same rules since the PS3 has no unlock to speak off. Oh sure burning is a type of unlock, but we have laptops or desktops for that; so not really a pro point here. That, and add more that piracy soared higher than homebrew itself is more than enough to cause problems that warrants the suit. We may not like it, but Egohot got himself deep in here. He may be electronic smart, but legal wise, still lacking.
Before you go all down on me why haven't the Dev Team been sued, I already explained it. But if you need another reason, it's because the Dev Team is always cautious on how and what to release and is always consulting users with a strong law background before making any move. Egohot? Well....
Edit - And even then, iPhone OS jailbreaking has to have the previously mentioned purpose to keep being protected. The day Apple announces unlocked iPhones for all carriers is the day jailbreaking on the iPhone becomes very well endangered.