Invest in Mocap System not simple as you think . YOull be deal with alot hardware problem . Unless youll preserve to hire guys for IT , hardware technician and keyframe fixer , you`ll be spent your times with fix the mocap data .

Yes .. a lot studio using those  MOCAP system , but  still many studio  too doesnt have it for themselves and they still can produce nice animations even with Mocap data integrated in their projects . So how they do that ?  Rent or ask for custom mocap data !!

Mocap rely on bone structure and totally need hard work if you plan to using mocap data on figure/character which have different rig ( bones structures )

I recommended you ask  to studio which provide custom mocap data first than the option buy the system . So you can minimize wasted money but not really usefull problems . But if  you already had some calculation about finance and other problem with MOCAP things so go ahead

Thanks