Another format is onnx [0], where Apple and Goodle don't seem to participate. I don't know the politics behind it but there should be a common format for all libraries/platforms.
onnx seems to be an initiative to try to allow Microsoft's and Facebook's AI platforms to compete with Tensorflow.
Considering Tensorflow is more a grab at developer mindshare than an ideal platform [for example, its performance lags by a factor of two behind MXNet and Torch], I think it's a smart plan.
I don't think the last sentence is fair to trensorflow. Torch has been around for ~15 years compared to the 3 of TF. You'd expect TF to catch up in terms of performance in the future.
Considering Tensorflow is more a grab at developer mindshare than an ideal platform [for example, its performance lags by a factor of two behind MXNet and Torch], I think it's a smart plan.