What happened to upload speeds? I remember ~10 years ago, LTE speeds on my carrier (T-Mobile) were in excess of 75Mb/s. Now we're down to about 1/3 of that.

What happened to upload speeds? I remember ~10 years ago, LTE speeds on my carrier (T-Mobile) were in excess of 75Mb/s. Now we're down to about 1/3 of that. Is there some channels tradeoff in 5G, like DOCIS, where there are a finite number of channels that can be either upload or download, and carriers give more channels to download? Or is it just carriers being carriers and sucking on metrics that are not widely advertised?