Back when I started in this business, "unmetered" meant something you could verify with a Cisco switch and a calculator. These days, it means whatever the marketing team dreams up between lattes.
I rented a "1Gbps unmetered" box from RackNerd for 30 days. Ran continuous iperf3 to my own endpoint, logged every packet with tcpdump, and graphed the results.
The truth: 940Mbps sustained for 71 hours, 23 minutes. Then a hard throttle to 95Mbps. Not gradual. Not "fair use" negotiation. A cliff. Tc qdisc show confirmed HTB with a 95Mbit ceil.
I have 2.1TB of pcap files. The community is welcome to them. Provider's response to my ticket: "Our fair use policy permits burst to 1Gbps, sustained is subject to network management." The policy was last updated three days after my ticket.
Kids these days call this transparency. I call it what it is. Mark my words: within two years, "1Gbps" will mean "1Gbps for one hour monthly" and we'll have accepted it.