The issue here is one of rights. Who owns the rights of the generated data? Especially if it was the "crowdsourced" product of n people. Does the data make any

The issue here is one of rights. Who owns the rights of the generated data? Especially if it was the "crowdsourced" product of n people. Does the data make any sense outside the context of Umbra's software? Is it exportable? Or do Umbra retain the rights to take their ball away at any time? These are all questions anyone should be asking before putting any sort of time & effort into "contributing" to some sort of "crowdsourced" project. Or even putting a significant amount of work into a cloud-based tool. Mapillary's answer was a compromise - contributed image data is published under a creative commons license, but Mapillary retain copyright over the metadata (most importantly positioning information). This is a bit of a fudge which would prevent users reclaiming the entire dataset and taking it elsewhere, but it seems to work for the community ... mostly.