Today, US based file sync & share vendor Kiteworks announced their acquisition of ownCloud and Dracoon. Nextcloud offers a free hands on migration service and takes over the remaining runtime of the contracts. Migration is a very quick and easy process, as shown by the many hundreds that have done this already over the last years.
As long as they continue to maintain the github repository and keep it free without any hidden ads/spyware or restrictions, I will continue to use their service.