Okay... now setup a cluster of three pgsql servers with automatic failover... your options are to become very intimate with your dbms, and now pick from half a dozen poorly implemented solutions, or pay licensing costs to EnterpriseDB close to the same costs of MS-SQL, where you get to click a few buttons and your db is clustered.

It is a very big deal... and an area Posgres is sorely lacking, but progress is made, and in another 2 releases may catch up to MS-SQL 2005.

I love what pg offers for dev, but it really isn't enough from the operations side. That said, I'd be more inclined to reach for RethinkDB for most situations these days, if it were up to me.