Just saw a news article that a consulting company called 01 Consulting just did a study of the CAE market. Unfortunately the report is $2,850 so, no matter how interested I am in the results I’m not going to buy one.
However they did release an Executive Summary:
http://www.01consulting.net/02_2011_MCAE_GLOBAL_Market_ES.html
And in there they have a cool graph that shows relative size (by revenue):
The size of MathWorks was shocking to me how big they are. At their price point that is a lot of seats. ANSYS dominates, with between 20% and 25% of the market.
The other thing they mention is continued double digit growth in the CAE segment. Even in these times, people are getting the message that simulation pays back big.