Broadly speaking, the people who have significant, nontrivial expertise in the field is limited (to a first approximation) to
- students of Hinton/LeCun/Bengio/Ng, and/or
- members of Google/Facebook/Baidu's deep learning group.
An actual deep learning expert can have unrivalled access to infrastructure, excellent colleagues, data, and compensation, at any of Google/Facebook/Baidu etc.
Given this backdrop, it's less surprising that a significant number of the current crop of deep learning companies are unimpressive technologically - those with actual expertise have much better opportunities.
- students of Hinton/LeCun/Bengio/Ng, and/or
- members of Google/Facebook/Baidu's deep learning group.
An actual deep learning expert can have unrivalled access to infrastructure, excellent colleagues, data, and compensation, at any of Google/Facebook/Baidu etc.
Given this backdrop, it's less surprising that a significant number of the current crop of deep learning companies are unimpressive technologically - those with actual expertise have much better opportunities.