Corporate sigils are super-breeders. They attack unbranded imaginative space. They invade Red Square, they infest the cranky streets of Tibet, they etch themselves into hairstyles. They breed across clothing, turning people into advertising hoardings. They are a very powerful development in the history of sigil magic, which dates back to the first bison drawn on the first cave wall.
The logo or brand, like any sigil, is a condensation, a compressed, symbolic summoning up of the world of desire which the corporation intends to represent. The logo is the only visible sign of the corporate intelligence seething behind it. Walt Disney died long ago but his sigil, that familiar, cartoonish signature, persists, carrying its own vast weight of meanings, associations, nostalgia and significance. People are born and grow up to become Disney executives, mouthing jargon and the credo of a living corporate entity. Walt Disney the man is long dead and frozen (or so folkmyth would have it) but Disney, the immense invisible corporate egregore persists.