For a long time I've been shocked about the large amount of venture money that goes to companies that are involved with trendy open source projects that just don't have a moat.
For instance I've heavily used Elasticsearch as have many other without ever paying money to Elasticsearch the company. Similarly, companies like Pivotal, Cloudera, Hortonworks, Continuum Analytics, etc. just seem to be a scam. So long as they are trendy some companies will think that they have to pay them money, until they realize that they don't.