This is simply not true. Unsigned code came before piracy. OtherOS kept people wanting to run code on their console happy, removing it was a severe mistake.

And don't put words into the mouth of the PSJailbreak authors. The PSJailbreak allows unsigned code to run, that is why they made it first and foremost (they need unsigned code for piracy), they saw that they can get piracy and went for it. Anything to drive the sales, right? And we still don't know who's behind PSJailbreak, and if they are or aren't in the 'homebrew scene'.

What 'pirate method'?

'DVD/HDDVD/BluRay scene' we're comparing consoles to media now? Get your act together.