Short reminder:
The human genome, with all its magic, is about 3,117,275,501 base pairs long. Source: Wikipedia
If you would encode that data digitally, and store it on a SSD drive, it would take up < 1 GB.
So, if we can do so much magic with 1 GB, that should be an inspiration to all software to do more, with less space.
Thank you for coming to my talk.
WindowsXP requires 650MB of disk space and a lot of Linux use less then that. However it is rather easy to have more, as storage is cheap and it is usually better to use a bit more storage and have a lower end processor instead.