[ButlerianJihad]

Firstly, you’ve spelled “megabits” wrong.

https://en.wikipedia.org/wiki/Bit_rate

Secondly, that 10 Mbps was only your downstream signaling rate.

https://en.wikipedia.org/wiki/Data_signaling_rate

Was your upstream via analog dialup?

[elevation]

The cable link was full duplex. I had friends whose service used dialup for the upstream but never heard good things about it - the latency made it frustrating and it seemed like a lot of apps weren't tuned to work well.