> still costs ~1000USD to read the ~ 1Gigabyte human genome

This piece is dropping fast though; Dante Labs will currently do it (with 30X coverage) for individuals for $500 [1]. And I believe the price for labs that do a lot of sequencing is significantly lower per-genome.

Writing is still a much bigger challenge, though. Writing something the size of the human genome is currently considered a "grand challenge" and is being tackled by HGP-Write:

https://en.wikipedia.org/wiki/Genome_Project-Write#Human_Gen...

[1] https://us.dantelabs.com/products/whole-genome-sequencing-wg...