Thunderbolt cables are extra thick to support the signaling that thunderbolt requires, so unless you're actually using that cable for data, it's more cumbersome. And shorter - max of 10ft. Which may be fine for you, but no thanks. And also, optical Thunderbolt cables can't carry power, so there's no guarantee that a thunderbolt cable will even do power delivery. If it's longer than 10 ft, then it won't.