This is the second installment of a series of posts on the subject of geospatial open source based on my talk at the CASCADOSS symposium. The topic for this post is vendor lock-in, or rather the widespread thought in the GIS world that open standards such as those promoted by the Open Geospatial Consortium (OGC) will break vendor lock-in. In theory it should work: open standards should make GIS products interchangeable and interchangeability precludes vendor lock-in.