I haven’t met Rohit, but I’ll give anyone with his educational background a fair bit of leeway before I say they’re wrong or misguided. With that in mind, Rohit, some thoughts for you:
– Craigslist isn’t about the software; that’s easily replicated. It’s about:
a) Community; and
b) “Capital” that allows them to (comparitvely) reach marketplace inflection points (the point at which a market becomes self sustaining) in different verticals in different geographies more efficiently than their competitors (to date).
The other thought… Is running a locally hosted instance of Craigslist really a “decentralized” marketplace? If all it takes is moving the GUI rendering to the user’s machine (while still invoking processing from a centralized service), we could decentralize any abstracted marketplace fairly easily…