If a battery fab is as expensive as a chip fab, it's illogical to build one on speculation. Business isn't charity. If you can make more money collecting patents and blocking use of tech, it's an obligation to stockholders to do precisely that.

Of course, if government research and development were involved and the tech not patented so that the public would benefit, that would bypass many obstacles. We have an Internet because we had an Arpanet, lest we forget...