Here's a personal beef describing how Google places too much emphasis on engineering and too little on the experience paying customers have with its services: Google Apps. Support is almost nonexistent for nearly anything that isn't already on their roadmap, the roadmap is set by engineering and not based on customer feedback, the deployment schedule is completely closed and updates frequently surprise domain admins & their users, billing for various services (GSAs, GAPE, Postini) is non consolidated, and various features break at regular intervals. It doesn't help that a lot of their engineering showcases in Gmail -- Labs features -- they pitch and great improvements to Gmail, but offer zero support for. This included Offline when it was in Labs.

Google is a great engineering company, but it still doesn't "get" the enterprise.