The FTTH offerings from Ziply, Cox, Comcast, Google, ATT, Centurylink etc are all the same "shared media with high oversubscription" design too. Among them the typical ratio is ~32 PON users for the given "base rate" PON standard, similar to a typical ~20-50 for coax at a given DOCSIS standard. Both have better/worse examples (particularly early gigabit PON deployments were 64) but FTTH has rarely been about getting dedicated bandwidth up to the neighborhood box... honestly most of the time the lion's share of the benefits are "it's a sign your area just got upgraded cabling and equipment for the first time in many many years" than anything to do with the physicalities of the wire.
For GPON that's 2.5 Gbps for downstream and 1.25 Gbps for upstream. So with a 32 split it's the same story of 2-3 people downloading a popular Linux ISO at 980 Mbps still eat up the entire fiber line for all 32 people.
The difference on the fiber, outside the better upload symmetry we already see, is it will be able to scale a lot more in the future. Some places already have 10G PON (which, unlike GPON, is usually actually said speed) such as where ATT offers 2G and 5G symmetric service. The next step will be 25G PON (again, about the actual nominal speed).
For GPON that's 2.5 Gbps for downstream and 1.25 Gbps for upstream. So with a 32 split it's the same story of 2-3 people downloading a popular Linux ISO at 980 Mbps still eat up the entire fiber line for all 32 people.
The difference on the fiber, outside the better upload symmetry we already see, is it will be able to scale a lot more in the future. Some places already have 10G PON (which, unlike GPON, is usually actually said speed) such as where ATT offers 2G and 5G symmetric service. The next step will be 25G PON (again, about the actual nominal speed).