Apple's New Campus Budget Is Now $5 Billion, Up From The $3 Billion Estimate In 2011
“Extravagance” is a very extreme term, especially when considering Apple’s typical conservatism with purchases.
They need the space to keep growing the number of employees they can have in Cupertino. They need a ‘nice’ space to not only attract new employees, but to also assist with talent retention. Good people don’t want to work in dilapidated, old, bland work environments.