I really wanted to go all in on Google Apps and have been using them exclusively for the last year, but at the start of december I started negotiating a large contract and I had a solicitor drawing up some documents for me.
Both the solicitor and the large company I was negotiating with were sending me .docx files and Google docs was failing to number the paragraph correctly.
This let to quite a bit of embarrassment and was forced to go out and buy Office for mac. If I was using a Cromebook I would have to buy a whole other laptop.