[xiaolingxiao]

The key bit of information from this (https://venturebeat.com/2020/04/14/ai-startups-raised-6-9-bi...) is that "capital flows disproportionally into large late-state deals." I would read this as a lagging indicator of how "hot" the field is. Most of the companies have found their "niche" and identified the actual problems that need to be solved; like other commentators have said, these problems may only be tangentially related to ML models themselves. These companies are currently scaling up and locking themselves into the market. Given how long the sales cycle is and how sticky it may be in enterprise, this means now is not a great time to start a company just doing "AI".