The reason you were allowed to store 11 million copies is because the U.S. Supreme Court ruled[1] in 1984 that you were permitted to make copies of TV shows to watch later on your VCR. And this was reputedly because some of the supreme court judges had VCRs — which had been spreading lightning fast at the time — and understood the concept and wanted to find or create a legal argument to permit such copying.
Just imagine if VCR adoption had been slower, and that the judges had not yet tried out that newfangled invention for home recording, and they had ruled that personal copies weren't allowed. Then today, you'd have been making 11 million illegal copies. It's amusing to think about whether making a single copy available to 11 million users would have been much less legal risk in that scenario.
[1] https://en.wikipedia.org/wiki/Sony_Corp._of_America_v._Unive....