This can't be the issue, even if it's get 10k submission per seconds, it can't make the system like Google Drive down. come on. that just ridiculous.
Google has come down a lot from their pedestal last week. In my book, this Jabber federation issue put them on par with "two teenagers in a garage".
So, ridiculous as it may be, today I believe one spreadsheet can bring GDrive down. Last week I had a different opinion.