I'd go even further and suggest that the current plaintiffs have proven they could not have made FB. Their focus on "getting credit" signals that they wouldn't have been as focused as Zuck on "making something cool".

From the posts on their engineering blog, it sounds like (esp in the early days) that was clearly the focus -- make something cool, get people to play with it.

"I can't keep count of the number of people who I talk to on a daily basis online or in person, at networking events, etc... that acts as if their idea is so revolutionary that they must keep it to themselves. This is utter bullshit."

Not always!

It can depend heavily on what is meant by "an idea".

Here is an extreme example: 'Idea' (A) is a pill, taken once, and safe, that will cure any cancer right away. 'Idea' (B) is actually how to make such a pill.

For (A), there's little or no reason to keep it secret. For (B) there are some tens of billions of rectangular green reasons to keep it quite secret until some good lawyers have done good things with patents.

Idea (A) is just a broad concept of a new product. Right: Mostly there is no good reason to keep one of those secret.

But idea (B) is much different.

I confess: I never thought of anything like (A) as an 'idea' at all.

An idea like (A) is some first cut description of what to do and commonly easy to think of. An idea like (B) is how to do (A). If (A) would be valuable but is difficult to do and if (B) does it, then (B) has the main importance.

In my career, I've only considered cases of (B) to be an 'idea'. Such ideas do need to be kept secret, say, as in Top Secret in the US DoD, secret before have protection from the USPTO, or trade secret.

If it is obvious and easy to do (A), then I would conclude that there was no technological advantage, no technological barrier to entry, and would would have to look for a special reason to try.

I'm interested only in an (A) when no one else knows how to do it very well and I figured out (B) that does do it well along with the other usual criteria -- many people are eager for the solution and ready to pay; can deliver the solution for much less than can get paid for it; etc.

I confess I'm shocked that people here on HN neglect the role of (B).

I was even more shocked when KP's J. Doerr stated "Ideas are easy; execution is everything" and "ideas are plentiful". True for (A), definitely NOT for (B). If have (B) for that cancer pill, I can assure Doerr that the idea was everything and execution will be entirely routine.