This was the dragon at the gate. CATIA was enterprise software, costing thousands of dollars. It demanded a server. It demanded a license key that Elias didn't have.
CATIA V5 R21: The Engineer’s Guide to Downloading and Installation download catia v5 r21 2021
: Includes advanced tools for Part Design, Generative Shape Design, Assembly Design, and DMU Kinematics. This was the dragon at the gate