Wireless can NEVER compete with dedicated fibre. It is SHARED media, so the more users, the slower the throughput. It is very similar in concept to dial up modems. There is a limit to the actual bps that can be carried on any given spectrum - greater throughput is achieved by fancy encoding methods. You can think of this as a code that uses a single letter to represent a word or phrase. This also has limitations in terms of processor speed, reliability and data recovery (e.g. from corrupted transmission). These issues can be overcome to some degree by using more wireless spectrum or increasing the density of base stations or both. However there is also very limited spectrum available, and enormous costs in building more stations. The costs of wireless to end users is far greater than fixed infrastructure (ADSL, FTTN, FTTP) as can be seen by a comparison of mobile data costs and caps compared to ADSL.
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