It probably won't take too long for someone to implement an open source version of Greenplum using Postgres. And there are a lot of people who are willing to pa

It probably won't take too long for someone to implement an open source version of Greenplum using Postgres. And there are a lot of people who are willing to pay for high-performance analysis of large data sets (as the success of Teradata, Netezza, et al. confirms).