Well, being devil's advocate: DDN maybe thinks Nexenta did not have the right to open source Edgefs after it aquired Nexenta. It seems to be BS though. Citing

Well, being devil's advocate: DDN maybe thinks Nexenta did not have the right to open source Edgefs after it aquired Nexenta. It seems to be BS though. Citing from the DMCA: "[...] EdgeFS was improperly contributed as open source without the authorization of DataDirect Networks, Inc. or its wholly-owned subsidiary, Nexenta by DDN, Inc., the copyright owners".