Yeah,

but without big software companies it will be quite hard. If Red Hat shifts to Openshift, I am afraid that this project will be going into oblivion.

Best Regards,
Strahil Nikolov

Similar question has been asked in "Is there a plan for ovirt 4.5 and furture versions?"[1] thread.
As a product, Red Hat Virtualization has a different lifecycle than oVirt which is a community project.
What will be the future of oVirt project depends on how the community will be shaping it. You're welcome to contribute shaping this future!