> The brain is what's known as expensive tissue
Then there's the cost of maintaining the giant vats of fluorescent green fluid in which giant brains are wont to float, as well as the inevitable speakerphone (for complaining about the slowness of their web connection) and custom pseudopods (evolved out of the morbid delight of giant brains for watching zombie movies, which they find lobe-splittingly hilarious -- it's hard to cue MP4 files without pseudopods).
Don't get me started on the electric bill for running the entire secret underground lab.
-- DRR