Impressively, this managed to download the large nycflights13 library very quickly, and run a regression on its multimillion-row data in just a second or two.

That entire library/dataset is less than 5Mb compressed, which is barely larger than the size of modern commercial websites. An entire bible in uncompressed plaintext is only about 4Mb (compressed about 1Mb). Computers can really handle tons of data really fast; we've just become too accustomed to inefficiencies everywhere.