Why didn't google just make a huge key-value store instead of BigTable?

Question

NoSQL

It is enough to come up with a complex key and voila.
Consider an example from the Google PDF: usenix.org/legacy/events/osdi06/tech/chang/chang_h ...

"com.cnn.www, contents:html, ts123123" -- доступ к версии "123123" колонки "contents:html" строки "com.cnn.www"
"com.cnn.www, anchor:zuzu, ts555" -- доступ к версии "555" колонки "anchor:zuzu" строки "com.cnn.www"

The least significant bit is the timestamp by which they will be ordered. It's easy to get a range of cell versions.