95th percentile is pretty much industry standard charging for B2B connections (although my understanding of how places like openreach charge ISPs is that it's a

95th percentile is pretty much industry standard charging for B2B connections (although my understanding of how places like openreach charge ISPs is that it's a bit different to normal 95%) - but it does neatly map to 'you use more data, so you cost your ISP more money to serve you'. The shared wholesale model does have some advantages though - it means that we can have a wide selection of retail ISPs without having the pot luck of living in the right coverage area - there are cheap and cheerful options, and there are premium options aiming at a more niche userbase - it means ISPs can differentiate on what they do after handover, eg better peering/transit, provision of v4/v6 static addressing, better support, etc etc. It means they get country-wide availability basically immediately without the cost of trying to build out to everyone. FWIW, there are unlimited ISPs in the UK on the same model, but A&A seem to feel that it is not sustainable in their niche of the market.