Good overview, although a rather important aspect of the 'resilience' that's not really covered here is the way that SQL technologies navigate and sustain performance trends. Relational databases are sticky in large part because the implementations are always getting faster and more sophisticated.

SQL being a declarative language means that applications built on top of it can relatively easily take advantage of new hardware and increasing parallelization without changing any code (in addition to all manner of new software tricks, compression/optimization/joins/etc).