It's like the gold rush except the gold (data) is easy to make, and very very cheap. hmm better sell shovels.
(Of course, there is the ever more popular route of making services for enterprises wanting to outsource basic stuff.)
What you don't really see is the ML startups making billions yet. What you do however see is companies like Microsoft with their Azure product and Amazon with AWS Compute making bank off the tech startups doing ML. I really think the people who are cashing in the most with the ML craze are the cloud/compute providers.
I would be curious to see just how much VC money is being passed indirectly to MS Azure through ML startups.
And Nvidia