This is anecdotal as I have not seen or heard of anything like this happening before but a mutual friend of mine was part of a startup that went on to participate in an accelerator; the dev separated from the project at that point. All the code was written with an open source licence yet the business folks are asking the dev to contractually turn over "all intellectual properties" to them, even after after a whole bunch of wage gouging hoopla that did not pay a standard developer wage at any rate which he agreed to out of naivete or working for some greater good. In ten years there will not be any good left in bitcoin if all parties cannot get along with the open source paradigm.