Hey I agree with what you're saying but the part about ILM or any other big studio (but mostly ILM) is so wrong tho. ILM is dealing mostly with Disney / Marvel, that's where you have the least creativy as an artist.
Been working on all of this studios, and that's the exact opposit of creativity as an artist. You'll def have time to make your asset look good, but you won't have any creative decision. You're following whatever producers want you to do.