... that's not really better. Requiring the desktop installation of Drive for trivial cases like that means that the web-application isn't really a web-application, but rather a desktop application that uses the browser as a GUI.
Actually, that's due to Drive trying to support the system clipboard intelligently (e.g. such that if you pasted into MS Office, you'd actually get a table/cell structure, rather than just text). Browser APIs don't provide support for that level of copy-paste, so it has to be worked around.