The first millennials are now in their mid to late 30s and are moving up to the executive suite. In doing so, they are not only changing the way they work - they are also establishing completely new status symbols based on the model of Silicon Valley startups. There, entrepreneurs like Facebook founder Mark Zuckerberg (born 1984) have been following the motto for years: sneakers instead of dress shoes, hoodies instead of jackets and e-scooters instead of company cars. The changes that result for the corporate world and society are profound.