Why is asymmetric speeds a problem? I don't think there is anything inherently wrong with having multiple types of service for different use cases. That is true with other utilities (electric, water, gas) and is part of general infrastructure planning in those areas.
Of course the actual pricing, availability, etc are also important but I don't think there needs to be a one-size-fits-all model for Internet bandwidth.
I get that. I'm not saying that there aren't different use cases, I'm saying that it is reasonable that there should be different price points for the different use cases.
Even if the physical plant supported symmetric bandwidth, I would expect different pricing plans for different utilization patterns.
Of course the actual pricing, availability, etc are also important but I don't think there needs to be a one-size-fits-all model for Internet bandwidth.