Are you serious ??? About all aeronautic, automotive and shipyards industries are using Catia. buisness like Bombardier, Boeign, Dassault, Lockheed Martin,80% of F1 teams, Ford, Chrysler etc...
Catia is a high end high priced 3d engineering solution. it's not a toy that a small or even medium buisness can afford. it's about 60k each fucking station!!
That beeing said, all 3d modelers are about the same for basics funtions, so if you learned Catia, you can easily make the transition to SolidWork, Inventor, Solidedge, Proe etc...