There have been rumours [1] coming out from one of top frontier companies that they have a hit a wall with the existing technology. They simply can't just throw more data at the problem and expect generational advances.

Which means just like the last ML/AI/DS hype cycles we will be going through a winter until the next research breakthrough is invented.

[1] https://www.reddit.com/r/singularity/comments/1go6dq1/a_leak...