It worth remarking on specifically because it is not where Android was designed to go and it fits rather awkwardly.
Imagine you sell taco kits. Then you discover some people are buying your taco kits, throwing away the shells, downloading instructions from the internet and using the other ingredients in different proportions to make bean soup. You also sell canned soup and it also sells decently. You might decide to bring out a bean soup range based on the taco kit. Maybe they think it tastes better then your intentional bean soup. Maybe they like making it themselves. Either way, it's worth noticing.
http://www.amazon.com/Best-Sellers-Computers-Accessories-Lap...
There's still a huge business market for browser apps such as Docs and it would take a while before there are equivalent Android apps for desktop form factor.