Apparently the global market for AI was $2.65 billion, mainly focused on a few core suppliers. The US is the biggest single spender at over 35%, and although text processing was the most common used application in 2017, this is clearly expected to move towards video and other media over the coming years.
https://www.techrepublic.com/article/ai-software-market-to-hit-78b-by-2025-here-are-the-top-applications-for-the-technology/
The market for AI software is exploding, with IBM and Google leading global suppliers, according to QY Research.