In a sense yes, they continue the lawsuits because Jobs instilled that same sense of "we're fighting against the injustice of the world" mentality.
I'm not sure why anyone would buy that from him.
...yeah. Or these lawsuits weren't filed by Steve Jobs and rather were filed by a company he worked for and was and still is run by it's stockholders and board.
They're a bad thing in general, and even Apple has admitted that these products tend to steal sales mostly from other Windows and/or Android oems rather than from Apple.
There I said it. the term "ultrabook" is a weasel term invented by Intel to distract people from "Macbook Air clone". Anyone who can rub 2 brain cells together saw that the first "ultrabook" Asus UX21/UX31 were Macbook Air knock-offs and the same for the Lenonvo/Toshiba clones. I'm shocked Apple hasn't filed suit and petitioned for an injunction. Sure "ultrabooks" aren't selling at all, and perhaps Tim Cook is more pragmatic about it but Steve Jobs would have taken offense and sued out of principle. "Stop stealing our stuff" was Steve's rallying cry.
This screams troll thread. Thankfully these stupid injunctions seem to be going away. Apple isn't the first to attempt an ultra light form factor. Their timing was brilliant though. The first generation of it didn't sell well, but they brought the machine out just when SSDs were starting to infiltrate the market, and Intel was developing new low wattage cpu of a higher spec/quality than the old celeron stuff. Really you can't lay claim to an entire form factor.
The other thing you may be missing is that ultrabooks benefit Apple. If there are more ultrabooks, it may further development and investment in components that will eventually make it into the macbook air. Obviously Apple doesn't develop everything in house, and they will never do their own manufacturing because it's the least profitable link in the chain, and Apple likes to shove any low margin item off the table. I mention this as it's one way that they or any other company could improve the quality control of their machines, at which point the sourced parts would be the weak link.