Certified GKH Gardening Expert
They will probably remain bare until it is old enough to start branching. On occasion, stripping leaves can encourage branching, but this is not always the case. The best thing to do from here will be to keep anyone from stripping anymore leaves, and continue to care for it as usual until it recovers. Once you see signs of vigorous growth, you can cut the plant back. It will sprout new branches at this point.
This article will help you to care for these shrubs: https://www.gardeningknowhow.com/houseplants/rubber-tree/how-to-care-for-a-rubber-tree-plant.htm