30 MB * 500,000,000 copies = 15,000 TB = 15 PB. Per [1], that's about one month of global Internet traffic in 1999, and about 6 minutes of global internet traffic in 2017[2]. I'm too lazy to re-do this math with today's numbers, but it's probably more like 2 minutes today.
[1] https://en.wikipedia.org/wiki/Internet_traffic
[2] Check my math: ( (15 PB) / (100,000 PB monthly traffic in 2017) ) * 30 days * 24 hours * 60 minutes = 6.5 minutes.