Ultimately, Facebook’s strategy seems flawed by lack of preparation. It is only now investing in processor technologies to support its efforts. It has Oculus technologies, but these seem to be on a different tack, focused on pure AR experiences. Integration with the smartphone seems quite limited, Facebook has failed to build a solid reputation around privacy and doesn’t (yet) appear to have built much in the way of a supporting development environment. To be fair, beyond Oculus, Facebook does have several assets it could leverage; I have no doubt it is already iterating more sophisticated glasses in its labs.
Apple, meanwhile, already seems to be working on how to develop health sensors for its future wearables. It is fair to note that most market speculation at present sees Apple introduce a less well-featured first iteration of its glasses next year, before a more sophisticated solution ships a few years down the line.