I have same view...
windsurfing lowered their growth but suddenly picked up again when wide boards appeared. Then kiting made some people think that windsurfing was going to stop and maybe for a couple of years it was the feeling. But I feel since last year too that windsurfing is peacking again and that will grow very fast in the next 3-4 years. Back to the light wind feeling made people remember the great feeling of hi wind that other sports, say sailing or kiting seems to be different. People is re-discovering why windsurfing thrilling feeling is so nice and is coming back or is appearing again.
In my country I feel this year there is a lot more people interested in windsurfing now.