It is just the bare minimum, that most people using a word processor, can understand. They probably made it to grab some market share and then stoppen right there. It is nowhere close to being a workhorse to build upon for anyone, who has any professionalism in their workings with WYSIWYG word processors. Professional documents do not make use of direct formatting. One does not simply click a "bigger font size" button thrice or the "bold" button or whatever. Google Docs is a toy and I wont consider any document created in it in any way professional.