[tompccs]

Arguably Google started this trend - it had a multicoloured logo, their head office was called a "campus", they had beanbags, etc. It has defined a generation of corporate messaging: non-threatening, childlike simplicity. Compare and contrast companies called things like "INTERNATIONAL BUSINESS MACHINES", built at a time when corporations wanted to exude power, scale, financial strength, and technical brilliance.

[aikinai]

Doesn't negate the rest of your point, but just for your information, business parks have long been called campuses; that's not a Google or infantile thing.