IBM Watson has been an abject failure. I think IBM dumped a billion dollars into what were essentially 90% shell scripts sed'ing and awk'ing datasets.

From their Q4/2019 results:

Revenue Highlights 4Q19 Total Revenue $21.8B

Cloud & Cognitive Software $7.2B

Global Business Services $4.2B

Global Technology Services $6.9B

Systems $3.0B

So Watson is a portion of the "Cloud and Cognitive".

Further down, it shows just the Cloud part:

Cloud Revenue $6.8B

$7.2B-$6.8B=$0.4B

Not bad, but $400M in Watson "Cognitive" revenue isn't a notable portion of $21.8B.

What uptake is it having? I've only ever seen it used as a marketing device.

Added source to my initial comment.

I doubt that this source is very accurate. The "List of the top companies using IBM Watson" is very odd.

You get better information from their annual report.

Watson is just a brand prefix at this point - it goes in front of a number of products like Watson Studio, Watson Machine Learning, Watson Assistant and so on.

The Watson groups, Watson health in particular but all of them in general, are some of the hardest hit groups in the last couple of RAs