Part of the problem is that most realtors want it that way. I live in Austin, and the push for a few years now has been to have a "silent market" where a buyer picks a "full service" realtor (AKA full commission), and gets a week or so jump on properties being listed in the MLS. This gives them a better chance to get the property before the MLS hordes descend and start bidding it up.
The part I've never understood is, as a seller, why wouldn't I want my property to have the largest exposure and the most interested buyers. Presumably, having people getting into bidding wars for something i'm selling is a benefit.
The part I've never understood is, as a seller, why wouldn't I want my property to have the largest exposure and the most interested buyers. Presumably, having people getting into bidding wars for something i'm selling is a benefit.