The cost to learn a new software is trivial. The cost to redesign all library components in the new software is huge.
It is very analogous to programming if you consider it like rewriting a program designed in Java into C++. Depending on the complexity of the program, you will become proficient in C++ long before you finish the code transition.
I use Siemens NX to design. It would take thousands of hours to recreate all the partfiles we use into a different CAD software. Some of the big guys write programs to make a transition easier (from Ideas to NX), but they are not perfect. They may work for some simple parts, but for more complex things... forget about it.
It is very analogous to programming if you consider it like rewriting a program designed in Java into C++. Depending on the complexity of the program, you will become proficient in C++ long before you finish the code transition.
I use Siemens NX to design. It would take thousands of hours to recreate all the partfiles we use into a different CAD software. Some of the big guys write programs to make a transition easier (from Ideas to NX), but they are not perfect. They may work for some simple parts, but for more complex things... forget about it.