This is Exactly what my ISP does. So I don’t know why you are being downvoted. I pay for symmetrical 1Gb. I receive, as tested through speedtest.net, 1060Mbps down and 1040Mbps up. In order to receive those speeds, I had to test from a computer with an ethernet interface faster than 1Gbps. And of course the router would also need to support the higher bandwidth link. My Mac Studio has a 10Gb interface; and my router has a 2.5Gb interface. If you have a router with WiFi 6 or 6e capability, you could also exceed 1Gb with that (providing the device you are testing with also supports it).