[benatkin]

MongoDB doesn't deserve all the credit (or blame) for what they've created. The client libraries are true open source projects, and a lot of the good parts of the design have probably come from them. I think they've also accepted a lot of contributions to mongod without compensation, and had the copyright assigned to them. Having the copyright assigned to them is reasonable, but it facilitates them closing an open source project that's received many community contributions, which is unethical IMHO.

[codemaverick123]

They use plenty of other open source components as well. As I pointed out in other parts of the discussion they use PostGres beneath the scenarios for their reporting solution and charge customers for it. What do they contribute back to the PostGres community?