Had an instance with almost 2TB on disk in 2015, it's probably a lot more by now, if it's still running as-is.
Was for analytics/data-warehousing. Though the big table was partitioned so queries were always nice and snappy.
The machine had 128gb ram back then, but probably never needed that much. The applications working with the data ran on that same server, so processing latency was usually <10ms even for larger queries.
In my experience of almost a decade in infosec now, no, we're not okay. I don't know any other group where so many people are struggling with burnout or who have developed a drinking habit because of their jobs. Might be selection bias, but this industry eats people alive, more so than others.