>What AWS and others basically did is create identical services, keep all the profits, and exploit gaps in Open Source licensing to this end.
Gaps in open source licensing? The license Elastic chose explicitly allows anyone to take the code, run it as they wish, and not contribute anything back. There are other FOSS licenses that are slightly more strict about this; they could have chosen AGPL if they wanted someone hosting a service to publish their changes, for example. And then they could have used a proprietary license from the start if they didn't want others competing with them at all using their code.
Launching a competing offering using FOSS that someone else wrote is nothing new at all though. Red Hat built their business around subscriptions for and support of free software, much of which they wrote, but they hardly had exclusivity over the distribution (see CentOS and all the providers offering it) or the software they wrote. (It's all free software after all!)
Gaps in open source licensing? The license Elastic chose explicitly allows anyone to take the code, run it as they wish, and not contribute anything back. There are other FOSS licenses that are slightly more strict about this; they could have chosen AGPL if they wanted someone hosting a service to publish their changes, for example. And then they could have used a proprietary license from the start if they didn't want others competing with them at all using their code.
Launching a competing offering using FOSS that someone else wrote is nothing new at all though. Red Hat built their business around subscriptions for and support of free software, much of which they wrote, but they hardly had exclusivity over the distribution (see CentOS and all the providers offering it) or the software they wrote. (It's all free software after all!)