Investment is a slightly misleading term. It's more of a gift, since Google is presumably not taking any stake in Drupal as a result. Yes, Google isn't purely

Investment is a slightly misleading term. It's more of a gift, since Google is presumably not taking any stake in Drupal as a result. Yes, Google isn't purely benevolent, and recruiting engineers is probably a goal of this program. But still, Google is not investing in Drupal; it's part of their recruitment budget, essentially.