It's a joke that's sort of open to interpretation.

The most straightforward is, "I just want do this incredibly simple thing; why is it so hard?"

But there's also the level of, "Googlers are so engineeringly pampered that they think serving 5 terabytes is the equivalent of Hello World."

And then there's another level of, "Well, isn't it? After all, this is Google and this is $YEAR."

Imagine it as "I want to have a http://foo/~me/ type path where I can park 5 TB of stuff and other people can fetch from it when they feel like it".

5 TB of data made available, not 5 TB of transfer/bandwidth/etc.

If you watch the video, it doesn't matter. It's just something they want to serve.

IIRC, the impetus for Jon Orwant creating the video was him wanting to make 5TB of data publicly available (the US patent dataset? it was before my time) and all the hassles that were involved.

i think it just means to put 5TB of data online