Somewhat [relevant xkcd](https://what-if.xkcd.com/63/).
Google (who owns/operates YouTube) has _a lot_ of disk space. Like, more than you can imagine. Randall Munroe estimated back in 2013 that Google had about 15 _Exabytes_ of data storage capacity. A decade later, they have much _much_ more than what they had back in 2013.
Google consumes a healthy percentage of the planet’s HDD and SSD annual production capability, and they have for decades now. They run data centers all over the planet filled to the brim with disks.
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