Earlier quoted context omitted.
Google Docs is no replacement for actual serious work in Office. That's like asking someone who uses NetBeans to switch over to repl.it
This "actual serious work" you mention is not what most people use Office for anyway. Most people write simple letters, and do very basic spreadsheets. This is probably one of those "80% of the people use 20% of the features" scenario.
Most people write simple letters, and do very basic spreadsheets.'
Most "actual serious work" involves receiving and modifying other peoples' drafts. As such, if anyone uses an advanced feature, everyone uses the advanced feature.