[artyomavanesov]

Zapier seems exactly like the type of product that is difficult to unbundle because its value is in its integrations. If an integration (e.g. Gmail and Trello) maps to an addressable market, then the more permutations there are, the larger Zapier's potential market and value is. If you move away from Zapier to some optimized single-purpose integration then you lose the potential value from access to the other integrations. And because of Zapier's enormous library it covers both common and niche use cases.

Zapier is different from something like Craigslist because the latter only offers convenience from having different verticals in one place. There is no synergy between them.