I'm not sure of the veracity of this, but apparently the Disney set the film Treasure Planet up to fail specifically so it could wash its hands of the very cool but expensive hybrid technology the film used where traditional animation and CGI were combined.
Personally I'm really sad this kind of technique never caught on more in Western films, Treasure Planet was panned at the time but I think it's actually a bit of an overlooked classic. The art style works really well, take Long John Silver for example whose body is traditionally animated but his cybernetic limbs are CGI - this looked fantastic in 2002 so imagine what could be done now.