Reddit is a weird example. Making a code base a platform requires time and effort to be spent on ... Well making it ready to be a platform. There are a lot of things you don't need to do if your code is limited to your team and it's internal processes.
There is a diagram explaining this in the mythical man month, but I don't have my copy handy to give a reference.
Except that reddit's in the odd position of having released their codebase as a platform, without having been able to put the requisite time into making it suitable as such.
I watched a documentary a few weeks ago (damned if I can remember what it's called) about Netscape's transition to Mozilla. The amount of effort that went into that transition was staggering. For his part, Jedberg said [1] that preparing and maintaing redditOSS will likely be one of the first projects for their new hires, as it will make development and maintenance on their current codebase that much easier.
That documentry also reaffirmed my commitment to not do pure sitting-at-desk software development. Because my god netscape looked like a horrible place to be, no matter how many smart people you had around you. (These days facebook looks similar, but worse not even cubicles for privacy)
Yup, that was the one, thanks. I'm a bit torn as to the work environment: On the one hand, I'd hate to be a cubicle jockey for a large corporation. On the other, the engineers at netscape seemed to be buoyed by being surrounded by many capable nerds. It's that dichotomy that makes me, on the one hand, want to work for Google, and fear doing so on the other.
There is a diagram explaining this in the mythical man month, but I don't have my copy handy to give a reference.