all this technology and they could’nt make Exo suits for disabled people? or just robotic legs
Given what we know of Yui currently, it's probaby likely that was the intended purpose of Anne's body to begin with - Yui probably intended to do a full transfer instead of a copy until she was talked out of it.
Robotic prosthetics are likely available but they're probably more like robotic exo-frames, where Yui seems the type that would want prosthetics that work almost exactly like human legs (but better maybe?) - which is exactly what she built in Anne.