I think you're thinking of Ethernet standards - not consumer broadband options.
Broadband speeds are not jumping up in 10x increments - that'd be awesome, but it's not. I currently have a 30/2 connection - I don't see it jumping to 300/20 any time soon
However, connections that are not last-mile or long-distance (for our sake, let's say copper) are usually 100/1000, while fiber is used for 1gbps/10gbps