I think Google has a love-hate relationship with corporates.
Where I work, we've moved all our email and a lot of our shared documents onto Google. We are a large company, so Google is undoubtedly making a small mint off us.
Now, I am just an end-user, with only as much management access as any individual account can ever has. We still have weird problems with who can see and/or modify documents. It simply seems tuned for owners of documents to delegate access, which would make sense given Google Drive wasn't originally created to be a corporate product. The more individual-centric access happens to match our culture, but it would be a problem if it didn't.
I now have four Google accounts: my work one, my one gmail one, one I made for G+ and my Youtube one. I know Youtube users kicked up a long and loud stink about merging their YT accounts into Google (I put off converting mine as long as I could) and Google eventually responded by adding multiple account support in YT. Interestingly, Gmail support for multiple accounts took longer to be polished. Multiple accounts for the predecessor to Google Drive was even later.
I know people who don't understand why anyone would want multiple Google Accounts. I'm convinced even most of Google doesn't understand this and probably would prefer everyone has just one and only one. But I'm betting corporate accounts will not stop insisting on multiple account support. And because they get paid for those, they have to keep the feature.
Wade.
