With my Gigablast Internet (up to 940 Mbps down 35 Up) so not really Giga anything, but close, I have to guess I have unlimited. I have yet to find a site that delivers anything close to that speed except the speed test sites.
Dealing with government entities for business is always "different" than other businesses. We have an upcoming project, and they asked for a W-9. Easy, send them the PDF I filled out back in 2015. A week later, they attach the new 2018 version from the IRS.
The ONLY difference at all, is the line that says Revision October 2018. The old one was from 2015. The old one had just one page of instructions as the rest of the PDF document. The new one is 5 pages long. All the information I sent, is identical. Only the first page is used, the rest are the instructions on how to fill it out.
But the customer wants an updated one, so here ya go.