You seem to be talking about VDSL.
1) The numbers you quote are the maximum possible speeds (i.e. “up to <whatever>”). They only happen for people close to the CO or remote DSLAM on clean copper wiring. By not promising the maximum possible speed, Bell minimizes complaints to regulators, from consumers who get slower speeds.
2) Bell is trying to get out of the analog copper phoneline business. They’re doing minimal maintenance on copper wiring, and the resulting speed (or lack thereof) reflects that.
3) The VDSL standard is aimed at “the average consumer” who downloads software, binges on Youtube/Netflix/AmazonPrime, and has multi-gigabyte Windows updates every month, and uploads nothing larger than photos from their smartphone. That’s 90%+ of the market. It’s not profitable for VDSL providers to go after niche markets that require higher upload speeds.
4) Fibre is a different animal with a lot more available bandwidth, and symmetrical speeds are a thing. I live in a Bell-fibre building. I’m with EBOX, which is owned by Bell. The “60 mbits down and 10 mbits up” fibre service actually comes in at almost 79 down and 94 up !!! https://www.speedtest.net/result/17656392330 I’m not complaining. Note that I’m actually in City of Vaughan just north of Steeles Ave. The routing goes via Montreal.