People don't upload very often because their upstream sucks.
This is chicken-and-egg bullshit.
I am sure it is not that difficult to provision.
The area I resided in, had only DSL.
Later, a cable company ran FTTP, with a ONT outside, that converted the fiber to coax-DOCSIS, and then requires the usage of a cable modem? The ONT has a RJ-45 port, but the cable company does not know how to enable it.
The DSL was oversubscribed, and provisioned for less than 6Mbps/768kbps. However, it was only $35/mo.
Once the cable company offered service, it was $60 (plus modem rental or purchase) for 6Mbps/1Mbps.
Many people switched to the fake-fiber cable network, freeing up capacity on the DSL, so now the DSL is provisioned at 12Mbps, but upload is still 768kbps, and still $35/mo.
To get 5Mbps upload via the cable company would require a plan costing over $100/mo. That is their upper limit of upload speed. They can do 105Mbps down (closer to $150/mo), but 5Mbps up is the max.
I would love to have even 3Mbps upstream from the DSL provider
For now, I can use LTE for periodic uploading, where I can get 20 to 50Mbps, but I am paying much more for that privilege.
But, when time is money, I cannot afford to wait 3 hours for data to transfer at 768kbps (not considering encapsulation - yes, the DSL is PPPoE).