ADSL means "asymmetric digital subscriber line". Asymmetric in the sense that, technically, on a line that is already deliberately being run as fast as a long and noisy line will allow (which was never actually intended for high-speed digital signals anyway); some upload speed is sacrificed for increased download speed.
Most users have ADSL, so there's not necessarily anything your ISP can do about it, without installing a different technology.
Just saying...
I must agree that, unlike the early days of t'Internet when people mainly just downloaded stuff, increasingly symmetrical speeds are needed more and more now, as things such as the Cloud, local media servers, open NASes, video-calling, etc., proliferate; requiring increasing local upload volumes.
(from my ADSL line, with <1.2 Mbps download, and <0.3 Mbps upload).
