The worldwide market for wireless charging products was worth just over US$2 billion in 2017. However, this figure is projected to grow by about $19 billion in the next 4 years. The market research group BIS Research concludes that this is due to the increased uptake of global standards (e.g. Qi) and the integration of wireless chargers into everyday objects such as cars.
https://www.notebookcheck.net/Wireless-charging-market-set-to-be-worth-approximately-U-21-billion-by-2023.396311.0.html