[devbot9]

The question really becomes how do you make any platform/service that will stay true to it's mission and stand the test of time. The answer seems to be private ownership + the will of the founders to keep it that way and not sell out.

Craigslist is a great example of this; I highly recommend looking up Craig Newmark and his ideals. It's been around for nearly 30 years in more or less the exact same form, doing the exact same thing. It's privately owned and Newmark could sell the whole thing and be instantly propelled to billionaire status, but choses not to. There are no outside investors or corporate shareholders pushing for a bigger and bigger return every quarter. And no bloated teams of six-figure salaried engineers inventing work for the sake of work to justify their jobs and their resumes.

That mindset will at least keep the platform going for the rest of the life of the founder. On the 1000 years part, the next question is probably how would one legally structure a private company to restrict outside investments/purchases and straying too far from its original mission.